title: The effect of urea and guanidine hydrochloride on activity and optical rotation of penicillinase.
mesh_terms: D000578:Amidines / Q000737:chemistry*; D019791:Guanidine; D009904:Optical Rotation; D010405:Penicillinase / Q000737:chemistry*; D014508:Urea / Q000737:chemistry*
chemical_list: D000578:Amidines; D014508:Urea; D010405:Penicillinase; D019791:Guanidine
keywords: AMIDINES/chemistry; PENICILLINASE/chemistry; UREA/chemistry