incubation of jar cells with monensin or nigericin , monovalent cation ionophores that produce equilibration of na+ and k+ across cellular membranes , dicyclohexylcarbodiimide , an agent that inhibits intracellular membrane atpases , and methylamine , which neutralizes intracellular ph gradients , produced similar effects on hcg processing and secretion .
C0007634
cells
C0021868
intracellular membrane