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An understanding of cells is therefore vital in any understanding of life itself. Cell biology is the study of cells and how they function, from the subcellular processes which keep them functioning, to the way that cells interact with other cells.
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.