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8 months ago
1663: Robert Hooke used his microscope to discover a thin slice of cork. He discovered little rectangles that looked like rooms, so therefore he called them "cells," meaning "small rooms."
1674: Leeuwenhoek was the first person to observe living cells,which were unicellular organisms taken from lake water and rain gutters. He called these organisms "animalcules," meaning "small aniamls."
1838: Matthias Schleiden concluded that all plants are made of cells.
1839: Theodor Schwann concluded that all animals are made of cells.
1855: Rudolf Virchow proposed that new cells are formed only from cells that already exist.
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