1. White Blood Cells (WBCsWhite Blood Cells (WBCs))
Types of WBCsTypes of WBCs
GranulocytesGranulocytes contain granulescontain granules
NeutrophilsNeutrophils
EosinophilsEosinophils
BasophilsBasophils
AgranlocytesAgranlocytes
LymphocytesLymphocytes
MonocytesMonocytes
1
2. Neutrophils 60-70%
• 2-5 lobed nucleus and largest
•Action: by Phagocytosis
Eosinophils
Bi-lobed nucleus
Increase in allergic conditions
Stain red
Basophils
Nucleus usually bi-lobed
Stain with basic dyes such as methylene blue
Release the chemical histamine that cause inflammation
The Granulocytes
2
3. Agranular WBCsAgranular WBCs
Monocyte
Single kidney shaped nucleus
Phagocytosis after converting in to macrophages
Lymphocyte
They are small with a large round nucleus
TYPES :
B and T lymphocytes: Immune mechanisms
3
4. B lymphocytesB lymphocytes ::
They migrate in the bone marrow to the lymph nodes
and spleen where they mature.
They produce antibodies to counter pathogens and their
toxins.
4
5. 5
T lymphocytes :T lymphocytes :
T-lymphocytes become sensitised when they pass
through the thymus
They are able to recognise specific antigens
6. 5
T lymphocytes :T lymphocytes :
T-lymphocytes become sensitised when they pass
through the thymus
They are able to recognise specific antigens
