moxalactam ( a cephamycin antibiotic which will be referred to as a cephalosporin for convenience throughout ) , which contains the mtt side chain , was used as a positive control and was administered at 100 to 1,000 mg/kg per day , and cephalothin , which lacks an mtt side chain , was used as the negative control at 1,000 mg/kg per day .
C0007736
cephamycin
C3536856
cephalosporin