90 % of the strains were inhibited by 0.016 micrograms/ml of benzylpenicillin , by 0.032 micrograms/ml of ampicillin , cefuroxime , erythromycin , clindamycin or rifampicin , by 0.13 micrograms/ml of cephalothin , oxacillin or doxycycline , by 4.0 micrograms/ml of chloramphenicol and by 8.0 micrograms/ml of cotrimoxazole .
C0030827
benzylpenicillin
C0002680
ampicillin