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To the Editor:—
Liebowitz and Ritter reported on a case of anaphylactic reaction to chymotrypsin in The Journal, Jan. 9, page 159. Anaphylactic reactions were seen in 3 of 10 patients with cancer in another study who received courses of chymotrypsin without carrier. The study was recorded in the Proceedings of the Society of Experimental Biology and Medicine (71:250 [June] 1949).
Shimkin MB. ANAPHYLACTIC REACTION TO CHYMOTRYPSIN. JAMA. 1960;172(12):1320. doi:10.1001/jama.1960.03020120098023