Zinc Activation of a Coordinated Response in Hydra

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Science  27 Dec 1963:
Vol. 142, Issue 3600, pp. 1666-1668
DOI: 10.1126/science.142.3600.1666-a


In Hydra littoralis, the feeding response normally activated by reduced glutathione can be elicited by zinc ions under special experimental conditions: some calcium is necessary for the activation to be realized, but a high concentration of calcium inhibits the zinc-activated response. Zinc inhibits the normal feeding response induced by reduced glutathione.