44-9. Medline 23. ' Ring J. Angewandte Allergologie. (Implemented allergology.) Munich, Germany: Urban & Vogel, 2004 (in German). 24. Raithel M, Ulrich P, Hochberger J, Hahn EG. Measurement of gut diamine oxidase activity. Diamine oxidase as a new biologic marker of colorectal proliferation? Ann N YAc