Abstract
Simmons citrate agar supplemented with 0.2% adonitol (SCA medium) was used as a differential medium for some enterotoxigenic Escherichia coli: all strains with either a cryptic K99 antigen or a glucose-dependent K99 antigen and 70% of strains with a glucose-independent K99 antigen gave yellow colonies on SCA medium. Other faecal bacteria did not grow or else developed as blue colonies. Les auteurs proposent un milieu au citrate, selon Simmons, à 0,2% d'adonitol, sur lequel des souches de Escherichia coli à K99 masqué ou glucose-dépendantes et 70% des souches à K99 constitutif forment des colonies jaunes, à la différence de la grande majorité des autres bactéries de la flore entérique saprophyte du veau.
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