1. Introduction to Microbiology

2. Microbiology Study of microscopic (living ) things E.g. viruses, bacteria, algae, protists, fungi

3. History of Microbiology 1590 – First compound light microscope Zacharias Janssen

4. History 1676 –first observation of bacteria “animalcules” Anton Von Leeuwenhoek

5. History 1796 – First vaccine (smallpox) Edward Jenner

6. History 1857 – Germ Theory of Disease Louis Pasteur

7. History 1867 Antiseptic Surgery Joseph Lister

8. History 1884 Koch’s Postulates of Disease Transmission Robert Koch

9. History 1885 - Vaccine against Rabies Louis Pasteur

10. History 1929 Discovery of Penicillin (first antibiotic) Alexander Fleming

11. History 1938 – First Electron Microscope The electron microscope is capable of magnifying biological specimens up to one million times. These computer enhanced images of 1. smallpox, 2. herpes simplex, and 3. mumps are magnified, respectively, 150,000, 150,000 and 90,000 times.

12. History 1953 Structure of DNA Revealed Watson & Crick

13. History 1954 Polio Vaccine Jonas Salk

14. Recent History Genetic engineering Cloning Human Genome Project Biotechnology Who knows what is next?

15. Sizes of Microbes Virus - 10 →1000 nanometers * Bacteria - 0.1 → 5 micrometers ** (Human eye ) can see.1 mm (1 x 10 -3 m) * One billionth or 1 x 10 -9 m ** One millionth or 1 x 10 -6 m

16. Tools & Techniquesof Microbiology Compound light Microscope Electron Microscope Staining – to see structures Petri dish- to culture microbes Agar – culture medium