tetracycline , streptomycin and monomycin resistant variants of the cholera and nag-vibrios were obtained by means of repeated passages on nutrient media with increasing concentrations of the antibiotics ( 114 variants v. cholerae asiaticae , 1337 variants of v. cholerae eltor and 299 variants of nag-vibrios of the 1st heiberg group ) .
C0039644
tetracycline
C0008354
cholera