Bibliografisk träff 1980-01-01 Antigens in penicillin allergy. V. On the relative allergenic potency of antigens carrying penicilloyl determinants derived from azidocillin, ampicillin and benzylpenicillin. Ahlstedt S, Kristofferson A, Hall E. Int Arch Allergy Appl Immunol · comparative study; journal article