the concentrations of penicillin g , ampicillin , amoxycillin , cloxacillin , cephapirin , cephacetrile , neomycin , kanamycin , and oxytetracycline in the kidney , and also of tylosin in meat from the diaphragm muscle of cattle treated parenterally with these antibiotics were measured periodically in samples kept at 4 degrees c for up to 7 days after slaughter .
C0030827
penicillin g
C0002680
ampicillin