“…cis-and trans-Benzene glycol were prepared by the methods of Nakajima et al (1956Nakajima et al ( , 1959. Materials used for disc electrophoresis were supplied by Kodak Ltd., Kirkby, Liverpool, U.K. NAD+, NADP+, GSH, 1,10-phenanthroline, dithiothreitol, protamine sulphate, bovine serum albumin, L-amino acid oxidase, glutamic dehydrogenase and ovalbumin were frorn Sigma (London) Ltd., Kingston-upon-Thames, Surrey, U.K. p-Chloromercuribenzoic acid, catechol, FMN and FAD were from Koch-Light Laboratories Ltd., Colnbrook, Bucks., U.K. p-Galactosidase and fumarase were from The Boehringer Corp. (London) Ltd., Ealing, London W.5, U.K. All other reagents were supplied by BDH Chemicals Ltd., Poole, Dorset, U.K., except where stated in the text.…”