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Interstitial cell migration has been observed numerous times in grafted hydra, but the extent to which graft injuries might stimulate the migration of otherwise nonmotile cells was unknown. The present study describes the migration and differentiation of vital dye-labeled interstitial cells in intact, normal hydra. Interstitial cells, stained with a(More)
Interstitial cell migration was characterized in Hydra vulgaris (formerly H. attenuata) and the effects of axial position and tissue injury on migration were investigated. Migrating cells were labeled with the thymidine analog, bromodeoxyuridine, and grafted into unlabeled host polyps. Alternatively, cells were labeled directly in hosts with the(More)
Although interstitial cells of hydra can migrate either apically or basally along the body column, there is a distinct bias toward apical cell accumulation. This apical bias could be produced by a local vectorial property of the tissue or it may be controlled by a more global property, such as a signal from the apical head region. The migration behavior of(More)
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