“… EDTA for 2 h inhibited responses to 48/80 … B. The phenothiazines thioridazine (10–50 μM) and chlorpromazine (25–125 μM) inhibited secretory responses to mepacrine, to 48/80 and to con A. Both … calcium, but the early events of secretion initiated by these two secretagogues are pharmacologically distinct.”