we examined the antibacterial activity of penicillin g potassium , 100 microgram/ml , cefazolin sodium , 100 microgram/ml , and gentamicin sulfate , 20 microgram/ml against test organisms in m-k medium at 4 degrees , 23 degrees , and 37 degrees c for periods up to 18 hours .
C0279516
antibacterial
C0700526
cefazolin sodium