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Chemotactic selection is a method by which populations of cells exposed to ligands can be isolated and subsequently cultivated. We used Tetrahymena pyriformis GL cultures selected by chemotactic selection to insulin (10 nM), histamine (0.1 nM) and di-iodotyrosine (T2, 10 nM) to study the phagocytotic capacity under the induction of selector hormones. Our results show a long-lasting link between chemotactically...
It has been hypothesized that in phylogeny the encounter between potential signalling molecules and the continously changing cell membrane could result in the formation of a ligand specific receptor. This chemical (hormonal) imprinting is then transmitted to the progeny generations. It is, however, very difficult to know whether the selection of cells with receptor-like patterns or amplification of...
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