-Humans have not been able to find any living entity that is
not made of at least one cell.
-After sterilizing chicken broth by
boiling, Louis Pasteur showed that living organisms would not ‘spontaneously’
reappear. Only after exposure to pre-existing cells was life able to
re-establish itself in the sterilized chicken broth.
-By looking through a microscope,
Robert Hooke first described cells in 1665 while observing cork. Other
scientists after him had made similar statements about cells.
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