the observations that cells incubated in recording medium secreted luteinizing hormone in response to gnrh and that the gnrh-induced increase in voltage noise was inhibited by ca2+ channel antagonists support the hypotheses ( 1 ) that gonadotrophin secretion is initiated by gnrh-induced ca2+ channel activation and ( 2 ) that action potentials are not a prerequisite for gonadotrophin release .
C0007634
cells
C1327616
secreted