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What is a cell?
Cell is the smallest unit that makes every living thing has its own structure and function.
Was discovered by Robert Hook, 1665 under the microscope.
More cells make tissue. The human body has the 100th 000 billion cells.
can be single-celled organisms - bacteria - or multicellular.
There are organisms, such as, for example, viruses.
science that studies the cell cytology - the Greek kytos, hollow - while cytopathology study changes in the cells.