[Infection studies in laboratory mice with erysipelas and coli bacteria after the administration of biotechnical substances].

Chlormadinone-acetate, human chorionic gonadotrophin, oestrophan, and zinc-metallibur, all of them substances used for biotechnological indications, were tested in generation experiments for their bearings on the immune status. The tests were applied to untreated descendants of biotechnologically treated mothers. Though the model animal experiments were continued through 6 generations of laboratory mice, no clue was obtained as to immunosuppressive action of any of the substances involved.