“…Ingham, Selkon, Codd, and Hale (1970) showed that 0 3 ,ug-1 25 ,g clindamycin was bactericidal to strains of B. fragilis. The high sensitivity of bacteroides to clindamycin and to a slightly lesser extent, the parent compound, lincomycin, has been confirmed by Kislak (1972), Bodner et al (1972), andMartin, Gardner, andWashington (1972). In this series only one of 1067 strains tested was found to be resistant to clindamycin.…”