differential medium

differential medium

a MEDIUM that can allow different types of ORGANISM to be distinguished by their different forms of GROWTH. For example, MacConkey's agar differentiates ENTEROBACTERIA that ferment LACTOSE from non-lactose fermenters (NLFs). Colonies of the lactose fermenters are red or pink, while those of NLFs are colourless.
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For adipogenic differentiation, medium was changed into adipogenic differential medium A (purchased from Cyagen Biosciences Inc., USA) for induction when the cultures reached full confluence.
Each method has its own advantages and disadvantages over other conventional techniques like diffusion method are still available and routinely used.8 CHRO-Magar (CMRSA) is a selective and differential medium used for early detection of MRSA within 24 hrs from clinical specimens including nasal, peri-anal swabs and sputum.9 MRSA strains grow in the presence of antibiotic (cefoxitin) and after hydrolysis of chromogenic substrate produces blue colored colonies.
Development of an improved selective and differential medium for isolation of Salmonella spp.
Potassium tellurite medium, serves as a selective and differential medium for Cornyebacterium sp.
XLD Agar is both a selective and differential medium. It utilizes sodium desoxycholate as the selective agent and, therefore, it is inhibitory to gram-positive microorganisms.
Further support is provided with the inclusion in the range of semi-solid MSRV Medium for the rapid detection of motile Salmonellae; Diassalm, a semi solid differential medium for the isolation of Salmonella spp.
CIVA agar is a selective as well as differential medium. Presence of vancomycin (10 mg/l), amphotericin B (4.5 mg/1) and ceftazidime (2 [micro]g/ml) suppresses the Gram positive bacteria, yeast and ceftazidime susceptible organism respectively.
A new selective differential medium for isolation of Stenotrophomonas maltophilia.

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