parallel studies were carried out in the rabbit iris on ( a ) the effects of na+ and/or ca2+ on the acetylcholine-stimulated 32p labeling of phosphatidic acid ( pa ) and phosphatidylinositol ( pi ) and the breakdown of polyphosphoinositides ( poly pi ) , and ( b ) the effects of these cations on the specific radioactivity of [ gamma-32p ] atp .
C0071655
polyphosphoinositides
C0031621
pi