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Editor(s): Nick Bisceglia |. Subscribe. Cell biology is the study of cell structure and function, and it revolves around the concept that the cell is the fundamental unit of life. Focusing on the cell permits a detailed understanding of the tissues and organisms that cells compose.
cell biology. noun. Medical Definition of cell biology. : a branch of biology dealing with the structure, function, and life history of cells and their constituents : cytology 1a Cooperation among the cytoplasmic elements is an emerging area of study in cell biology.âJean L. Marx, Science, 9 Dec. 1983.