Primary culture, cellular stress and differentiated function

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Abstract
Isolation of specialized cell types for the analysis of tissue‐specific gene function often results in loss of the differentiated phenotype. Examples of this type of phenotypic change following tissue disaggregation are reviewed together with possible explanations. Close similarities between the effects of cell isolation with those of other cellular stresses such as heat or anoxia point to common biochemical mechanisms being involved. This suggests that the study of freshly isolated cells will contribute significantly to out understanding of the nature of cellular stress and its consequences for the maintenance of phenotype and induction of tissue specific gene expression.