cells (cells) were discovered in 1665 by British scientist Robert Hooke (Robert Hooke, 1635-1703). At that time, he used a homemade optical microscope to observe the thin slices of the cork. After enlarging, he found a small space of one grid, which was named after the English cell. The meaning of this English single word itself has the usage of a small room grid, so it is not a different vocabulary. The cells observed in this way have long died, and only the remaining plant cell wall can be seen. Although he did not really see a unit of life (because there is no sign of life), later scientists still believe that it is of great significance, and generally regard him as the first person to discover cells. In fact, the first person to discover living cells was the Dutch biologist Ravenhok ( levenhok ).
cells can be divided into two categories: prokaryotic cells and eukaryotic cells , and have functions such as exercise, nutrition and reproduction. All organisms except viruses are known to be composed of cells, but viral life activities must also be reflected in cells.
Today, Xiao Cherry brings you a set of cell invasion experimental data . Come and take a look and learn together. ~
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