* In 1892, Dmitri Ivanovsky applied the chamber land filter(filter with small pores to retain bacteria) to show the existence of a virus in tobacco plant which was able to infect the healthy tobacco plant. This was the beginning of virology.
* In 1901, Walter Reed discover the cause of yellow fever Flavivirus or yellow fever virus is the first human virus.
* In 1903, Adelchi Negri described Rabies Virus in humans.
* In 1908, Vilhelm Ellerman and Oluf Bang discover a Retrovirus that causes Leukosis in chickens.
* In 1911, Peyton Rous discovered cancer-causing virus{Avian Leukosis/Sarcoma group(ALSV) and Reticuloendotheliosis-viruses (REV)} in chickens.
* In 1914, Max Lauffer and Stanley discovered the RNA by detached virus into protein and nucleic acid.
* In 1915, Fredrick Twort and Felix d' Herelle independently discover the bacterial virus. Felix coined the term "Bacteria Phage" which means "Bacteria Eaters".
* In 1918, the Influenza pandemic was the most severe in recent history and it was caused by the H1N1 virus. The virus was not identified until 1933.
* In 1926, viruses were defined as obligate parasites by Thomas Rivers.
* In 1931, Ernst Ruska and Max Knoll invented the first prototype electron microscope which makes the study of the complex structure of viruses easy.
* In 1935, Wendell Stanley concludes viruses are made of proteins by isolating crystals from Tobacco Mosaic Virus(TMV) since living organisms do not crystallize, Wendell concludes that viruses are not truly alive.
* In 1939, Helmut Ruska makes the first image of the Tobacco Mosaic Virus(TMV) by deflecting the beam of light over the virus which was coated in heavy metal atoms.
* In 1940, the First electron micrograph of Bacteria Phage was published which quieten the doubters who had argued that Bacteria Phage was relative to enzymes and not viruses.
* In 1943, Luria Delbruck demonstrated that genetic mutation arises in bacteria, in absence of selection rather than a response to selection i.e., the mutation in bacteria was pre-adoptive.
* In 1901, Walter Reed discover the cause of yellow fever Flavivirus or yellow fever virus is the first human virus.
* In 1903, Adelchi Negri described Rabies Virus in humans.
* In 1908, Vilhelm Ellerman and Oluf Bang discover a Retrovirus that causes Leukosis in chickens.
* In 1911, Peyton Rous discovered cancer-causing virus{Avian Leukosis/Sarcoma group(ALSV) and Reticuloendotheliosis-viruses (REV)} in chickens.
* In 1914, Max Lauffer and Stanley discovered the RNA by detached virus into protein and nucleic acid.
* In 1915, Fredrick Twort and Felix d' Herelle independently discover the bacterial virus. Felix coined the term "Bacteria Phage" which means "Bacteria Eaters".
* In 1918, the Influenza pandemic was the most severe in recent history and it was caused by the H1N1 virus. The virus was not identified until 1933.
* In 1926, viruses were defined as obligate parasites by Thomas Rivers.
* In 1931, Ernst Ruska and Max Knoll invented the first prototype electron microscope which makes the study of the complex structure of viruses easy.
* In 1935, Wendell Stanley concludes viruses are made of proteins by isolating crystals from Tobacco Mosaic Virus(TMV) since living organisms do not crystallize, Wendell concludes that viruses are not truly alive.
* In 1939, Helmut Ruska makes the first image of the Tobacco Mosaic Virus(TMV) by deflecting the beam of light over the virus which was coated in heavy metal atoms.
* In 1940, the First electron micrograph of Bacteria Phage was published which quieten the doubters who had argued that Bacteria Phage was relative to enzymes and not viruses.
* In 1943, Luria Delbruck demonstrated that genetic mutation arises in bacteria, in absence of selection rather than a response to selection i.e., the mutation in bacteria was pre-adoptive.
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