“Chloroquine, propranolol and trifluoperazine were the most potent drugs investigated, inhibiting lymphocyte … of adrenergic antagonists at 10(-5)M. Drugs such as salicylate and chlorpropamide , with little affinity for adrenoceptors … capacity for binding to albumin , inhibited lymphocyte transformation at 10(-3)M; …-bound ligands with an affinity for adrenoceptors.”