Selenite broth

Enrichment media similar to selective media but are designed to increase the number of desired microorganisms to a detectable level without stimulating the rest of the bacterial popnlation. When some special nntrients such as blood or serum, egg or meat pieces are added to basal media, the latter are termed enriched media. It favonrs the multiplication of a particular species of bacteria by incorporating special substances, which selectively favour its growth or inhibit the growth of competitors, e.g., selenite broth, alkaline peptone water. Blood agar, Loeffler s serum media. 

Selenite cysteine (SC) broth from Difco Laboratories (7) see Note 1). 

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