Succinate Dehydrogenase-dependent Nutritional Requirement for Succinate in Mutants of Escherichia coli ~ 1 2 . By I. T. CREAGHAN and J. R. GUEST Heterothallic Phytophthora : Evidence for Hormonal Regulation of Sexual Reproduction. By W. H. KO Purification and Properties of an NAD(P)+-linked Formaldehyde Dehydrogenase from Methylococcus capsulatus (Bath). By D. I. STIRLING and H. DALTON . A Spec...
