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Repression of Growth of Mammalian Cells under Agar

Abstract

WHEN disaggregated mouse embryo cells are first cultivated in vitro, the cells grow into a confluent layer of fibroblasts on the bottom of the Petri dish, and then begin to grow additional layers on top of the first. If the cells are transferred, subsequent subcultures will show less tendency to form multiple layers. This effect is accompanied by a diminution in growth-rate of the cells and may be described as a progressive decrease in their growth potential. This behaviour is to be contrasted with that of L cells, an established cell line derived from mouse fibroblasts, which show no diminution in their growth potential upon transfer, and retain their ability to grow out of the monolayer.

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GREEN, H., NILAUSEN, K. Repression of Growth of Mammalian Cells under Agar. Nature 194, 406–407 (1962). https://doi.org/10.1038/194406b0

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