The document provides an overview of histology and microscopy techniques. It discusses (1) the process of preparing tissue samples for microscopy, including fixing, staining, and mounting tissue slices on slides; (2) the basic anatomy and operation of light microscopes used to view prepared slides; and (3) sources for further information on histology labs and procedures.
Slideshow is from the University of Michigan Medical School's M1 Cells and Tissues Sequence
View additional course materials on Open.Michigan:
openmi.ch/med-M1CellsTissues
Slideshow is from the University of Michigan Medical School's M1 Cells and Tissues Sequence
View additional course materials on Open.Michigan:
openmi.ch/med-M1CellsTissues
as a partial requirement for one of my subject for this semester
I would like you to view my presentation and comment as well
I will be very glad if you find my presentation interesting, or comment on how I can improve my craft, THANK YOU :)
Scleral lens is a large rigid contact lens with a diameter range of 15mm to 25mm. Its resting point is beyond the
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Cataract,Lasik,Retina,Glaucoma Surgeries at Rushabh Eye Hospital and Laser Ce...guestd0e4e0
Rated as one of India 's leading Eye Hospitals, Rushabh offers the most advanced Eye Care Treatment and Technology in India today. We also combine the expertise of our team which includes specialist Eye Surgeons who are highly experienced in their specialties of Cataract, Retina, Glaucoma and Laser Eye Surgeries.
This is a Unified presentation for all the topics in the second quarter for Science 7. If you want to avail the powerpoint please contact me on my facebook account: Jady Claire Jackson Lullegao
A brief presentation for second-year students in Iraqi Technical Institutes (studying Medical Laboratory Technology). This introduction covers also the teaching laboratories.
Techniques of refraction is the process of calculation of glass power.drbrijeshbhu
Refractive errors are most common cause of ocular morbidity. It affects all age groups, and ethnic profiles. There is no g nder discrimination. Most common symptoms are blur vission along with pain in eye ,headache and tiredness. Refraction is process of determination of eye and currect it with power glass power or contact lens power. It can subjective or objective.
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered QualityInflectra
In this insightful webinar, Inflectra explores how artificial intelligence (AI) is transforming software development and testing. Discover how AI-powered tools are revolutionizing every stage of the software development lifecycle (SDLC), from design and prototyping to testing, deployment, and monitoring.
Learn about:
• The Future of Testing: How AI is shifting testing towards verification, analysis, and higher-level skills, while reducing repetitive tasks.
• Test Automation: How AI-powered test case generation, optimization, and self-healing tests are making testing more efficient and effective.
• Visual Testing: Explore the emerging capabilities of AI in visual testing and how it's set to revolutionize UI verification.
• Inflectra's AI Solutions: See demonstrations of Inflectra's cutting-edge AI tools like the ChatGPT plugin and Azure Open AI platform, designed to streamline your testing process.
Whether you're a developer, tester, or QA professional, this webinar will give you valuable insights into how AI is shaping the future of software delivery.
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
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Here’s what you’ll gain:
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- Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency.
- Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity.
We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
Neuro-symbolic is not enough, we need neuro-*semantic*Frank van Harmelen
Neuro-symbolic (NeSy) AI is on the rise. However, simply machine learning on just any symbolic structure is not sufficient to really harvest the gains of NeSy. These will only be gained when the symbolic structures have an actual semantics. I give an operational definition of semantics as “predictable inference”.
All of this illustrated with link prediction over knowledge graphs, but the argument is general.
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Generating a custom Ruby SDK for your web service or Rails API using Smithyg2nightmarescribd
Have you ever wanted a Ruby client API to communicate with your web service? Smithy is a protocol-agnostic language for defining services and SDKs. Smithy Ruby is an implementation of Smithy that generates a Ruby SDK using a Smithy model. In this talk, we will explore Smithy and Smithy Ruby to learn how to generate custom feature-rich SDKs that can communicate with any web service, such as a Rails JSON API.
Elevating Tactical DDD Patterns Through Object CalisthenicsDorra BARTAGUIZ
After immersing yourself in the blue book and its red counterpart, attending DDD-focused conferences, and applying tactical patterns, you're left with a crucial question: How do I ensure my design is effective? Tactical patterns within Domain-Driven Design (DDD) serve as guiding principles for creating clear and manageable domain models. However, achieving success with these patterns requires additional guidance. Interestingly, we've observed that a set of constraints initially designed for training purposes remarkably aligns with effective pattern implementation, offering a more ‘mechanical’ approach. Let's explore together how Object Calisthenics can elevate the design of your tactical DDD patterns, offering concrete help for those venturing into DDD for the first time!
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
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Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
From Daily Decisions to Bottom Line: Connecting Product Work to Revenue by VP...
Histology Introduction
1. HISTOLOGY: INTRODUCTION “ What is going on ?” Pulling it together Regions Organs Molecules Tissues Connections Cells Parts Organelles Development Functions Systems
2. Noon talks for Internal-Medicine residents’ Board prep Two recurring themes -- Is it what it appears to be ? Does the treatment/procedure do what is claimed for it ? What is the evidence ?
3. MEDICINE: Some aspects What gives with this patient ? Regions Molecules Tissues Connections Cells Parts Organelles Development Functions Regions Systems Systems abnormal Parts Connections Development Tissues Cells Organelles Molecules Functions Microbes Medicines Age Populations Costs ? Gender Organs Organs Abnormal
4. Abnormal variants for all the earlier fields of knowledge Developing judgment - weighing various contributions for relevance & quality of evidence Foretaste of the ‘pulling it together’ in the PBL experiences, but much omitted, e.g., therapy, follow-up, cost; likewise for clinical correlations This doubling, plus more fields, e.g. microbes, is why medical training takes several years Any twit can lay hands on an LCD projector, and push images at you reminds one that the story may be faulty; it is one of many; and there are omissions Feel for the aspects that yield valid risk factors in this particular diagnosis ?
5. PORNOGRAPHY & “THE REAL THING” Images versus REALITY What is the evidence for the real?
6. Images versus REALITY - Functional Anatomy REALITY is the living person, often via images Surface anatomy Palpation Endoscopy+ Radiology PET scans Ultrasound Doppler flows Gait & Reflexes etc Biopsies Fine-Needle Aspiration Cervical, Blood, etc Smears Flow cytometry & cell sorting Cell culture & grafting etc (Bits cut or sucked out for microscopy)
7. REALITY is the dead person DISSECTION [ Surface anatomy Endoscopy Palpation Radiology Ultrasound are sometimes useful as adjuncts to autopsy & histology correlations] Organs and large pieces cut out, examined, & prepared for MICROSCOPY- histology & histopathology (normal & altered side-by-side)
8. Images versus REALITY - Anatomy In Anatomy, the source of the evidence - the essential point of reference - is the cadaver for Gross & the microscope slide for Histo As the physician is knowledgeably comfortable with the patient’s gross & microscopic structure and its implications, you will become confident at the cadaver & the microscope, and with the resulting images TESTS focus on the cadaver, the slides, and interpreting images - identification, interpretation, & synthesis Bed-rock
9. MICROSCOPIC SLIDE Side view of slide Glass coverslip Glass slide 1”X3” Tissue Section Mounting medium Mounting medium: permeates section; fastens coverslip to slide; is clear; has refractive index as for glass Label
10. SLIDE USE - Cautions GLASS IS FRAGILE ! Take care with individual slides & especially with the boxes of slides The slide must go on the stage coverslip up The high-dry & oil objectives cannot focus through the thickness of the slide to the section The label may have been put on the non-coverslip side, as shown ~ Slides & Microscope remain in the teaching Lab, always! Label
11. SLIDE PREPARATION I Steps Excise & Fix (preserve) the tissue in fixative Remove the water & replace with wax-solvent Imbed the oriented specimen in molten wax After it is solid, hold the wax block & cut slices Mount the thin slices (sections) on slides When dry, remove the wax, & stain the section Remove surplus stain & water; mount coverslip When mounting medium has set, do microscopy
12. SLIDE PREPARATION I Steps Excise & Fix (preserve) the tissue in fixative Remove the water & replace with wax-solvent Imbed the oriented specimen in molten wax After it is solid, hold the wax block & cut slices Mount the thin slices (sections) on slides When dry, remove the wax, & stain the section Remove surplus stain & water; mount coverslip When mounting medium has set, do microscopy
13. 50 % ethanol 70 % ethanol 95 % ethanol 100 % ethanol benzene/xylene Dehydrating series paraffinwax Remove the water & replace with wax-solvent Imbed the oriented specimen in molten wax Miscible with ethanol; dissolves wax Fresh tissue 10% Formalin fixative label
14. MICROTOME - a fancy meat-slicer - holds the wax block, & cuts off thin slices, as the block is slowly advanced mechanically Block Knife Section Glass slide Water-bath After it is solid, hold the wax block & cut slices Mount the thin slices (sections) on slides Lift out floating section on the slide
15. FREEZING MICROTOME holds the frozen tissue, & cuts off thin slices, as the block is slowly advanced mechanically Block is the tissue Knife Section Water-bath Glass slide For fast biopsy, imbedding is omitted - frozen sections Mount the thin slices (sections) on slides Lift out section on the slide
16. Dissolve paraffin wax Stain with Hematoxylin - blue Wash Stain with eosin - red Nuclei - blue Cytoplasm- red Wash When dry, remove the wax, & stain the section
17. Dissolve paraffin wax Stain with Hematoxylin - blue Wash Stain with eosin - red Nuclei - blue Cytoplasm- red Wash When dry, remove the wax, & stain the section Potassium + eosinate - stain + charged amine, etc, groups on proteins bind - eosin “Acidophilic staining” “ Basophilic”
18. SLIDE PREPARATION III Steps Excise & Fix (preserve) the tissue in fixative Remove the water & replace with wax-solvent Imbed the oriented specimen in molten wax After it is solid, hold the wax block & cut slices Mount the thin slices (sections) on slides When dry, remove the wax, & stain the section Remove surplus stain & water; mount coverslip When mounting medium has set, do microscopy
19. SLIDE PREPARATION III Steps Excise & Fix (preserve) the tissue in fixative Remove the water & replace with wax-solvent Imbed the oriented specimen in molten wax After it is solid, hold the wax block & cut slices Mount the thin slices (sections) on slides When dry, remove the wax, & stain the section Remove surplus stain & water; mount coverslip When mounting medium has set, do microscopy
20. Images versus REALITY Artifacts are appearances not true to the original state of the tissue SLIDE PREPARATION IV Artifacts Excise & Fix (preserve) the tissue in fixative Imbed the oriented specimen in molten wax After it is solid, hold the wax block & cut slices Mount the thin slices (sections) on slides When dry, remove the wax, & stain the section Remove surplus stain & water; mount coverslip When mounting medium has set, do microscopy Knife scores, chatter Bruising/splitting from cutting; Poor preservation, e.g., gut lining, enzymes, lost fat Wrinkles, section not flat, splits Weak/unbalanced staining Dirt, hair, bubbles Dirt on lenses, bad illumination Misleading orientation, Shrinkage & distortion, Mislabeled
21. CLASS LIGHT MICROSCOPE Max MAGNIFICATION Eyepiece (10X) times ‘Oil’ Objective (100X) = 1000X Base Eyepiece/Ocular Stage Slide Light source Body Objective lenses Condenser
22. CLASS LIGHT MICROSCOPE Controls I Base Condenser Eyepiece/Ocular Slide Light Body Inter-ocular distance Moving stage Iris diaphragm Field diaphragm Coarse & Fine focus Light intensity On/Off Objective selection left rear
23. CLASS LIGHT MICROSCOPE Controls II Condenser Eyepiece/Ocular Slide Light Body Stage clip for slide Condenser focusing Condensercentering Ocular focusing left-side Base
24. OPERATION I Without looking down the eyepieces , plug in the cord Turn the light-intensity knob back counterclockwise, Switch on the light, turn the intensity up (about a 90 o turn) while observing the light via the field opening Open the field diaphragm wide Move the condenser assembly to its top position Switch the shortest objective lens (X4) into the working position Open the iris diaphragm wide Select any well-stained slide Base Condenser Eyepiece/Ocular Slide Light Body Inter-ocular distance Moving stage Iris diaphragm Field diaphragm Coarse & Fine focus Light intensity On/Off Objective selection
25. OPERATION II Field diaphragm Pull back the clip & place slide, cover-slip up, on the stage Use the stage controls to bring the stained section over the light Focus, using coarse, then fine adjustments Close the iris diaphragm to take the glare out of the view Push (pull) the eyepieces together to match your eye spacing Shut one eye, focus with the fine focus ; then shut that eye, open the other, and focus for it with the ocular focus (turning the eyepiece knurled ring) Switch in the next higher objective, and focus, using the main focusing controls & testing for binocular fusion Base Condenser Eyepiece/Ocular Slide Light Body Inter-ocular distance Moving stage Iris diaphragm Coarse & Fine focus Light intensity On/Off Objective selection
26. SMEAR - another method of preparation Drop of blood Slide 1 Slide 2 On contact, slide 2 extends the drop along its 1” side Slide 2 Slide 2 Pushing angled slide 2 along #1 smears the line of blood across slide 1 Lift away slide 2; dry #1 ; stain; coverslip Smear A few cells are damaged; smear is not evenly thick; & staining is uneven. Same apply to SPREADS
27. TEASING - a method of preparation Lumbo-sacral cord Roots Terminal thread A technique you know from using a needle to separate out the connective-tissue filum terminale from the nervous cauda equina of dorsal & ventral roots On the MICROSCOPE SLIDE, with a needle point one can tease apart individual nerve or muscle fibers from their bundles in nerve or muscle When tissue is already thin, it can be draped - SPREAD - over the slide like a tablecloth (Filum terminale)
28. Cut across BONE shaft twice Saw out a sector Lay sector flat & grind thin Wash ground section Dry ; place unstained on slide Coverslip for viewing GROUND PREPARARTION
29. HISTOLOGY SOURCES 303 Human Structure Syllabus next to last section p.8 Powerpoints - Comments & Standing assignment Histo Powerpoints Histology Full-text * & Histology Lab Guide http://wberesford.hsc.wvu.edu http://www.geocities.com/Athens/Academy/1575 * Recommendation - catch it while you can: download the above this week. We’re talking about 30 megabytes, and some of the above items could fit on floppies. It is never too soon to attune yourself to examiners’ thinking. Syllabus p. 56 (lower-right #) presents the formats in which Histo lab exam questions will be framed SBLC computers have “Histology Lab Assistant” WebBoard at Course 303 on Anatomy Dept site
30. On the 4th floor, straight back from the working elevator, go to the SBLC (Rm 4005) and LEAVE your coat ( in the main lab, there are papers & envelopes on the desks that can get hidden or swept off, if coats are brought in today ) TODAY’s LAB PROCEDURES 1 Take only your book-bag (& computer, if you have it with you) into 4023. Locate your place - labeled in alphabetical order from the far end of the lab. Find the envelope with your name & the set of inventory forms. Open the envelope , remove the slip with the number to your Gross locker in the hallway. Write down this number in two other places. Take the small key out of the envelope and attach it to a key ring or something. If you are worried about your coat, or if this is already too much “structure”, take a break to try your locker combination and put your coat and other surplus stuff away. Once settled back at your place, use the key gently to open the top drawer at your place & take out the two small boxes of slides. Place them near the middle of the bench. Open the locker, and carefully lift out the microscope. Satisfy your curiosity - Find the microscope-use directions p.2 . Follow them with any well-stained slide. Ask us for help. [We will not issue oil for the X100 oil lens] Switch off the scope. Complete the receipt form. Go to p. 1 for slide numbering. Check your slide boxes against the inventory. Place forms in the wall folder .
31. Start the exercise on p.3, but with slide A-1 blood smear LAST of the four on examples of preparation methods. The smear is difficult to focus on. It needs at least the medium-power X10 0bjective; and the glare has to be taken out of the view with the iris diaphragm on the condenser. TODAY’s LAB PROCEDURES 2 The next exercise - Artifacts - should be straightforward. The idea behind the final exercise of this Introductory section is inexhaustible. One can go on and on about cells. Stop when you wish, and come back to it during the next two labs. Skip C-1. The cells are poor examples of neurons. The last part of the Lab on “The General Structure of Cells” is illustrated on the next slide, which indicates some of the variables, but does not show much of the extracellular matrix outside cells, e.g., basal lamina, collagen fibers, reticular fibers. In this and future labs, do not get hung up on a slide. If you cannot get your question answered in a minute or so, go on to the next slide; and come back later, when the question can be answered. Remind yourself with a note by the item. Hand in the inventory. Put your scope & slides away carefully. Lock the drawer & locker. About half of you share with a dental student. Please be considerate
33. GO GRANULAR Cerebellar Granule layer packed, small neurons- granule cells (& granulosa cells in ovary) Melanin granules in melanocytes & keratinocytes Blood Granulocytes from their very granular cytoplasm Layer Cell Granule Bas Eos PMN
34. Some differences between light and electron microscopy I Light microscopy Electron microscopy ---------------------------------------------------------------------- Section thickness (1-30 m) gives Very thin sections provide no a little depth of focus for depth of focus, but 3-D information appreciation of the third dimension. can be had from: (a) thicker sections Serial sections can be cut, viewed by high-voltage EM; (b) shadowed and used to build a composite image replicas of fractured surfaces; (c) or representation. scanning electron microscopy (SEM). Most materials and structures cannot Heavy metal staining gives a more be stained and viewed at the same comprehensive picture of membranes, time; stains are used selectively to granules, filaments, crystals, etc.; give a partial picture, e.g. a stain but this view is incomplete and even for mucus counterstained to show visible bodies can be improved by cell nuclei. varying the technique. Specimen can be large and Specimen is in vacuo. Its small size even alive. creates more problems with sampling and orientation.
35. Some differences between light and electron microscopy II Light microscopy Electron microscopy -------------------------------------------------------------------------- Image is presented directly to the Image is in shades of green on eye. Image keeps the colours given the screen; photographically, the specimen by staining. only in black and white. Modest magnification to X 1500; High magnification,up to X 2,000,000 but a wider field of view and easier thus the range of magnification orientation is greater Resolving power to 0.25 m. Resolving power to 1 nm (0.001 m.) Frozen sections can yield an image Processing of tissue takes a day at within 20 minutes. least. Crude techniques of preparation High resolution and magnification introduce many artefacts. demand good fixation (e.g. by (Histochemical methods are better.) vascular perfusion), cleanliness and careful cutting, adding up to fewer artefacts.
36. **** Did I choose the right medical school? **** Complete Ameba Medicine 10 4 ed. Pp 29 “ Please take your zillion+ cells elsewhere. I’m an Ameba doctor.”