Robert Koch was a German physician and scientist who is considered one of the founders of bacteriology. He developed experimental techniques to isolate bacteria and prove they cause specific diseases, such as showing that Bacillus anthracis causes anthrax. Koch established four steps, known as Koch's postulates, to identify the microorganisms that cause diseases. His work helped prove the germ theory of disease and led to advances in combating disease through isolation of pathogens like anthrax, tuberculosis, and cholera.

2. ROBERT KOCH
(INTERNATIONAL SCIENTIST)
Presented by,
MOHAMED SHABEEB E
NATURAL SCIENCE

4. Born : 11 December 1843, Clusthal- kingdom
of Hanover.
Died : 27 May 1910 (aged 66), Baden.
Nationality : German
Field : microbiology
Institutions : Imperial Health Office, Berlin

5.  He is a German physician.
 The specific diseases are caused by specific germs.
 He is widely regarded as one of the founders of the
science of bacteriology and microbiology.
 Robert koch showed that a spore forming organism.
 Bacillus anthracis was the cause of anthrax disease.
 This organism was then epidemic in sheep, cattle
and other domestic animals.
 This disease also occurs in man.

6.  No laboratory and he carried out his
experiments in his home.
 Using experimental animal is mice.
 He is a father of medical microbiology.
 Robert koch followed four experimental
steps which have been known as Koch’s
postulates.

7. 1.The microorganism must be present in every
instance of the disease and absent from
healthy individuals.
2.The microorganisms must be capable of
being isolated and growth in pure culture.
3.When the microorganisms is inoculated into
a healthy host, the same disease condition
must result.
4.The same microorganisms must be re-
isolated from the experimentally infected
host.

9. Discovery of bacteriology,
Koch’s postulates of germ theory,
Isolation of anthrax, tuberculosis and
cholera.

10.  He is established that specific diseases are
caused by specific germs (Germ theory of
disease)
 He won the Nobel prize for medicine in
1905.