He called the empty spaces in rows “cells” because they reminded him of the tiny rooms in a monastery (which are also called cells). Scientists began using microscopes for investigating everything.
examined things like blood and pond water
Leeuwenhoek called the tiny creatures he saw “animalcules” which means “little animals”
he later concluded that all living things are made of cells
Rudolf Virchow, German physician, after extensive study of cellular pathology, concluded that cells must arise from preexisting cells