Fig. 6
From: Penicillin-G and oxytetracycline residues in beef sold for human consumption in Maroua, Cameroon
Chromatogram of the blank sample
Fig. 6 | International Journal of Food Contamination
From: Penicillin-G and oxytetracycline residues in beef sold for human consumption in Maroua, Cameroon
Chromatogram of the blank sample