Sensitization of the Submaxillary Gland above the Level Reached after Section of the Chorda Tympani

Summary. After repeated subcutaneous injections of Hö 9980, a drug with pronounced atropine‐like properties, a supersensitivity towards adrenaline develops in the submaxillary glands of cats. The supersensitivity closely resembles that produced by section of the chorda tympani but is more marked. Evidence is given to show that the supersensitivity caused by the drug is entirely due to the parasympathicolytic activity. and it is concluded that the sensitization above the level produced by the preganglionic denervation is due to exclusion of some action of the paraspmpathetic postganglionic neurone on the gland cells.