De Vries, M Cholinesterase activity in sea urchin early embryos may be correlated to the intracellular ion content. [electronic resource] - Bollettino della Societa italiana di biologia sperimentale Apr 1994 - 105-9 p. digital Publication Type: Journal Article ISSN: 0037-8771 Subjects--Topical Terms: AnimalsCholinesterases--metabolismOvum--drug effectsPotassium--metabolismPotassium Channels--drug effectsSea Urchins--embryologySodium--metabolismSodium Channels--drug effects