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  Both Hans and Zacharias Janssen, father and son, were dutch lens makers who produced the first compound microscope.
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  Robert Hooke was the discoverer of the cells. He found them in a cork.
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  He made the theory that the presence of maggots in decaying meat does not result from spontaneous generation but from eggs laid on the meat by maggots.
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  He looked at a lot of things under a microscope and he discovered micro-molecules but he called them "animalcules."
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  German botanist; viewed different plants under a microscope and discovered the they are all made out of cells.
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  He figured out that animal tissues are made out of cells. Then he concluded that all tissues are made out of cells.
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  The Terrain Theory is the theory that the diseased body "the terrain" will attract germs to come as scavengers of the weekend or poorly defended tissue.
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  He figured out that some microorganisms could survive in extreme heat and he proved that animals wouldn't just rise up.
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  He made the theory famous that all cells arise from pre-existing cells to come up with cellular pathology (the study of disease at the cellular level.)
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  The theory is that Louis Pasteur proved that living organisms do not originate from inanimate objects. Examples of this are dust creates fleas and maggots arise from rotting meat.
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  The germ theory states that many diseases are caused by microorganisms.
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  He discovered that the microbes are in charge of sourcing alcohol made up with the process of pasteurization, where bacteria is destroyed by heating beverages and then letting them cool
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  He worked with anthrax and discovered that bacterium Bacillus anthracis was a cause of anthrax.