PNP Agar is an agar medium used in microbiology to identify Staphylococcus species that have phosphatase activity.

Nocardia isolation from biological specimens can be performed using agar medium enriched with yeast extract and activated charcoal (BCYE), the same utilized for Legionella spp.

Smooth and nonpigmented colonies, growth below the surface of semisolid agar medium after deep inoculation (as seen with M. bovis), 0.9 - 1.7mm in diameter.

After growth to saturation, aliquots of the cultures were plated on SD(-Arg-Ura) agar medium.

The bacteria were then spread on an agar medium in which the only carbon source was lactose.

It can be prepared as either a liquid medium or as an agar medium.

For example, Escherichia coli may be exposed to UV radition, then plated onto agar medium.

Liquid medium is superior to solid agar medium.

In lab samples, S. cellulosum grows on agar medium only when certain cell densities are plated.

When grown on marine agar medium, they form cream colonies (i.e. no pigmentation).