Epithelial interactions in Hydra: apoptosis in interspecies grafts is induced by detachment from the extracellular matrix.

Abstract

Apoptosis plays an important role in immunity and is widely used to eliminate foreign or infected cells. Cnidaria are the most basal eumetazoans and have no specialised immune cells, but some colonial cnidarians possess a genetic system to discriminate between self and non-self. By grafting epithelia of different species we have previously shown that the… (More)

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