Salmonella enterica on salmonella-shigella agar. H2S-positive, lactose-negative colonies. Cultivation 24 hours, 37°C;.
Salmonella-shigella agar is a differentially selective medium for the isolation of pathogenic enteric bacteria, especially those belonging to the genus Salmonella (SS agar is not recommended for the primary isolation of Shigella spp.; some strains may not grow due to the relatively high level of selectivity).