Anaphylactoid oedema produced in rats by certain dextrins

The author has previously shown the conditioning role of the anaphylactoid reaction in the calcification of the snout and paws of the rat after the injection of certain metallic compounds. The present experiments show that it is the dextrin fraction of these compounds which causes these anaphylactoid phenomena before the calcifying response. This fact deserves special attention since dextrin is frequently used in the preparation of certain drugs.