Hetacillin vs. ampicillin.
D000284:Administration, Oral; D000667:Ampicillin / Q000008:administration & dosage / Q000097:blood / Q000378:metabolism*; D006801:Humans; D007093:Imidazoles / Q000008:administration & dosage / Q000097:blood / Q000378:metabolism; D007273:Injections, Intramuscular; D007700:Kinetics; D010406:Penicillins / Q000008:administration & dosage / Q000097:blood / Q000378:metabolism*
D007093:Imidazoles; D010406:Penicillins; D000667:Ampicillin