title: Improved medium for detecting pigment production by group B streptococci.
abstract: The production of pigment which can be used for presumptive identification of group B streptococci is sometimes weak and difficult to observe in Columbia agar stab cultures. A medium which is whiter and affords better visibility of this pigment is described.
mesh_terms: D000362:Agar; D000693:Anaerobiosis; D003116:Color; D003470:Culture Media; D010860:Pigments, Biological / Q000096:biosynthesis*; D013292:Streptococcus agalactiae / Q000145:classification / Q000378:metabolism*
chemical_list: D003470:Culture Media; D010860:Pigments, Biological; D000362:Agar