Abstract
1. 1. Cholera enterotoxin (CT), at an optimal concentration of 2.38 × 1010 M, stimulated calcium uptake (P <0.01) and cyclic AMP accumulation (P <0.02) in cultured rat basophilic leukemia cells. 2. 2. No significant effect of CT on calcium release or cyclic GMP accumulation was detected. 3. 3. Pharmacologie and chemical agents which block calcium uptake or prostaglandin synthesis antagonized the effect of CT.