FSCN 2021 Lecture Notes - Lecture 8: Marcus Terentius Varro, Antonie Van Leeuwenhoek, Francesco Redi
24 Feb 2019
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Long period of time where people didn"t know what caused disease. Marcus terentius varro: proposed that disease could be caused by certain minute creatures which cannot be seen by the eye . Hippocrates: father of western medicine believed that diseases had natural not supernatural causes. Thucydides observed that survivors of the athenian plague were subsequently immune to the infection. You have more bacterial cells than human cells in your body. A typical virus measures about 100 nm- 10x smaller than a typical bacterium. An object must measure about 100 micrometers to be visible without a microscope. Epulopiscium fishelsoni can grow up to of a millimeter. Prions: proteins that occur naturally in the brains of animals and people. Normally harmless but can cause devastating illnesses. Started to go against the theory of spontaneous generation. Experiment of francesco redi- one covered jar and one uncovered jar with meat in it. John needham: suggested that microorganisms arise spontaneously in flasks of mutton gravy.
