rabbit antibodies raised against protein conjugates of azidocillin ( azo ) , ampicillin ( ampo ) , benzylpenicillin ( bpo ) and crude 6-aminopenicillanic acid ( 6-apa ) gave rise to two precipitation lines in immunoprecipitation tests against penicillin protein conjugates where the carrier was unrelated to the immunogens .
C0002680
ampicillin
C0030827
benzylpenicillin