"(Bursztyn) Goldberg (a graduate student) and I compared the dissociation constants and relative efficacies of agonists acting on muscarinic cholinergic receptors of isolated strips of rabbit stomach fundus muscle; and later John Besse (a postdoctoral fellow) and I compared the dissociation constants and relative efficacies of agonists acting on 1-adrenergic receptors of rabbit aorta."