RT Journal Article SR Electronic(1) A1 GRIFFIN, R. M.YR 1969 T1 Antigenic Relationships Among Strains of Mycoplasma mycoides var. mycoides, M. capri and M. laidlawii Revealed by Complement-fixation Tests JF Microbiology, VO 57 IS 1 SP 131 OP 142 DO https://doi.org/10.1099/00221287-57-1-131 PB Microbiology Society, SN 1465-2080, AB SUMMARY Complement-fixation tests were used to compare strains of Mycoplasma mycoides var. mycoides (5 strains), M. mycoides var. capri (5 strains) and M. laidlawii of bovine genital origin (3 strains). Strains of M. mycoides and M. capri showed cross-reactions of about 25% identity, but strains of M. laidlawii appeared to be antigenically distinct. The results, measured in terms of the amounts of complement fixed, are shown graphically and discussed in relation to the diagnosis of contagious bovine pleuropneumonia., UL https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-57-1-131