Before the inventions of microscopes, scientists did not know about cells. some thought that life just appeared out of nowhere. microscopes allowed scientists such as schleiden and schwann to see organisms under high magnification. after much study, which ideals became parts of the cell theory? answer

Proliferating cell nuclear antigen (PCNA) is a good marker for cell proliferation assay and is extensively used in cancer diagnosis and prognosis.

https://www.creative-bioarray.com/proliferating-cell-nuclear-antigen-pcna-assay.htm

that scientist would be robert hooke

the answer is c most of the fortnite players usually buy v bucks to get the battle pass and other cosmetics but some players who are referred to as "no skins" don't   buy skins and are usually noobs.

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