HERBERT S. SLSE, JACQUES GAUTHIEB, ROBERT BECKER AND JOHN Boz. c n H EMORRHAGE has been an important and ominous sign in victims of irradiation effects. Although its occurrence coincided with a period of intense thrombocytopenia, Allen and Jacobson1 in experimental observations in dogs observed a circulating heparin-like anticoagulant, and Allen2 concluded that it played an important role in th...