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To the Editor:
In our experiment, "Chymotrypsin for Experimental Herpes Simplex Keratitis," which was reported in the April, 1964, issue of Archives of Ophthalmology, a concentration of 10,000 units per cubic centimeter of alpha-chymotrypsin was used rather than 1 to 10,000 units per cubic centimeter as printed in the publication; and this preparation was lyophilized chymotrypsin rather than Chymar Aqueous.The Correspondence section welcomes inquiries and comments of a general or specific nature. The Editors may try to answer some of the questions, but more valuable will be the answers volunteered by others who have had especial experience related to the questions posed.
Ing MR. CHYMOTRYPSIN FOR EXPERIMENTAL HERPES SIMPLEX KERATITIS. Arch Ophthalmol. 1964;72(4):577. doi:10.1001/archopht.1964.00970020577024