The selective culture medium is called HAT medium because it contains hypoxanthine, aminopterin, and thymidine.

Ashdown's medium is a selective culture medium for the isolation and characterisation of Burkholderia pseudomallei (the bacterium that causes melioidosis).

But he did not isolate or identify the substance, and for 12 years or so con fined his work to the use of crude extracts in selective culture media.

XLT Agar (Xylose Lysine Tergitol-4) Is a selective culture medium for the isolation and identification of salmonellae from food and environmental samples.

The BSC is an 85 year-old organization well known to many thousands of scientists, worldwide but especially in N America, who buy certified dyes for staining of microscopic preparations or for making up selective culture media for bacteria.

Between 1986 and 1989, isolations of P cepacia from the sputum of CF patients who attended regional adult clinics in Edinburgh and Manchester in the UK remained low despite the use of reliable selective culture media and identification procedures.

Combining vaginal and rectal swabs, together with the use of a selective culture medium, improves the predictive value (positive predictive value of 67% and a negative predictive value of 92%) but only to a level which makes mass screening viable in areas with high rates of infection.

The presence of airborne P cepacia in the hospital waiting room before and immediately after occupation by 3 P cepacia-colonised patients was investigated with a selective culture medium (Mast Diagnostic Ltd, Bootle, UK) in association with a bacterial sampler (Casella Ltd, London, UK).

He was, as a bacteriologist, interested in the microbiological aspects, and as an enthusiast for technical methods, in the use of Penicillium extracts to make selective culture media (i.e. media in which a required organisms will grow readily while unwanted contaminants fail either through lack of an essential nutrient or because something is present which stops them).