gdp and gtp regulation of receptor-mediated stimulation of adenylyl cyclases in membranes of s49 murine lymphoma cells ( s49 ) , ns-20 murine neuroblastoma cells ( ns-20 ) , rabbit corpora lutea ( cl ) , and turkey erythrocytes were studied under assay conditions which minimized conversion of added gtp to gdp and of added gdp to gtp .
C0007603
membranes
C0007634
cells