Historical timeline of Microbiology
1665
Robert Hook- Cell Theory
Looked at a cork under a microscope and saw boxes which he called cells.
1668
Did not believe in spontaneous generation, he experimented with meat in jars to prove maggots did not arrive spontaneously
Francisco Redi
1673-1723
Anton Van Leeuwenhoek
first person to observe living organisms under a microscope he called them Animalcule (microorganism)
1753
Developed the binomial nomenclature that we use today.
Carl Linneaus
1796
Edward Jenner
Created the first vaccine for small pox. Inoculated people with a similar virus – cow pox.
1827-1912
Treated surgical wounds with phenol which killed bacteria, decreased infection and death in patients. Responsible for aseptic techniques. (Listerine)
Joseph Lister
1843-1910
Robert Koch
Koch's Postulates.
1. The same pathogen must be present in every case of the the disease.
2. The pathogen must be isolated from the diseased host and grown in pure culture.
3. The pathogen from the pure culture must cause the disease when it's inoculated into a healthy, susceptible laboratory animal.
4.The pathogen must be isolated from the inoculated animal and must be shown to the original organism.
1847
Proved that microorganisms causes surgical would infection
Ignaz Semmelweis
1864
Louis Pasteur
Demonstrated that microbes in the air could contaminate sterile solutions, but the air itself can not create microbes. Showed microbes could be present in non living matter and could be killed by heat.
Created pasteurization
1876
Robert Koch
Discovered Anthrax -Bacillus anthracis(not the band)
1884
Elie Metchnikoff
Discovered Phagocytosis. Observed cells collected around a splinter inserted in a sea star embryo
1910
Discovered first treatment for syphilis
Paul Ehrlich
1928
Alexander Fleming
Accidently discovered penicillin, first antibiotic discovered
Main topic
1940's
demonstrated the relationship between genes and enzymes
George W. Beadle and Edward I. Tatum
1950's
Barbara McClintock
A geneticist who discovered transposms in corn.
Transposons- are tiny segments of DNA that can move from one region of DNA molecule to another
1950's
Proposed a model for the structure and replication of DNA.
James Watson and Francis Crick
1953
Roasalind Franklin
Identified physical structures of DNA