A differential selective culture medium for Burkholderia pseudomallei, devised by Dr LesleyRichard Ashdown (1943-93), Townsville, Australia. B. pseudomallei grows as distinctive purple rugose colonies on this medium.
n. 1. any substance, usually a broth, agar, or gelatin, used for the *culture of microorganisms or tissue cells. An assay medium is used to determine the concentration of a growth factor or chemical by measuring the amount of growth it produces in a particular microorganism; all other nutrients are present in amounts adequate for growth. 2. see contrast medium.... medium