Quantitative analysis of cell size and shape has shown that the tumour promotor 12-o-tetradecanoylphorbol-13-acetate (TPA) alters one of three parameters of cell shape, dispersion. It has no effect on cell area or elongation. This reflects the fact that TPA causes cells to form long narrow processes extending from the cell body. The ability to measure alterations in specific parameters of cell shape is important for correlating changes in the observed behaviour of cells with effects on cytoskeletal organisation.
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Brown et al. (1989) studied this question.
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