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Two forms (I and II) of beta-N-acetyl-D-glucosaminidasefrom cock seminal plasma and one form (III) from spermatozoa were separated by chromatofocusing. The active enzyme forms I and II had pl values of 6.6 and 6.3, respectively, while form III had two subforms with pl values of 6.3 and 6.1, as determined by polyacrylamide gel electrofocusing. The optimim pH of enzyme forms I and III ranged from 3...