DCA agar

Revision as of 00:26, 9 August 2012 by WikiBot (talk | contribs) (Bot: Automated text replacement (-{{SIB}} + & -{{EH}} + & -{{EJ}} + & -{{Editor Help}} + & -{{Editor Join}} +))
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search

WikiDoc Resources for DCA agar

Articles

Most recent articles on DCA agar

Most cited articles on DCA agar

Review articles on DCA agar

Articles on DCA agar in N Eng J Med, Lancet, BMJ

Media

Powerpoint slides on DCA agar

Images of DCA agar

Photos of DCA agar

Podcasts & MP3s on DCA agar

Videos on DCA agar

Evidence Based Medicine

Cochrane Collaboration on DCA agar

Bandolier on DCA agar

TRIP on DCA agar

Clinical Trials

Ongoing Trials on DCA agar at Clinical Trials.gov

Trial results on DCA agar

Clinical Trials on DCA agar at Google

Guidelines / Policies / Govt

US National Guidelines Clearinghouse on DCA agar

NICE Guidance on DCA agar

NHS PRODIGY Guidance

FDA on DCA agar

CDC on DCA agar

Books

Books on DCA agar

News

DCA agar in the news

Be alerted to news on DCA agar

News trends on DCA agar

Commentary

Blogs on DCA agar

Definitions

Definitions of DCA agar

Patient Resources / Community

Patient resources on DCA agar

Discussion groups on DCA agar

Patient Handouts on DCA agar

Directions to Hospitals Treating DCA agar

Risk calculators and risk factors for DCA agar

Healthcare Provider Resources

Symptoms of DCA agar

Causes & Risk Factors for DCA agar

Diagnostic studies for DCA agar

Treatment of DCA agar

Continuing Medical Education (CME)

CME Programs on DCA agar

International

DCA agar en Espanol

DCA agar en Francais

Business

DCA agar in the Marketplace

Patents on DCA agar

Experimental / Informatics

List of terms related to DCA agar


DCA agar - Deoxycholate Citrate Agar - is particularly useful for the isolation of organisms that cause bacilliary dysentery, salmonella strains that cause food poisoning and Salmonella Paratyphi. It is not so selective for Salmonella Typhi. This growth medium is inhibitory to most gut bacteria, in particular species of the genus Proteus, although these species do survive on DCA agar. It is therefore essential that suspected pathogens must be subcultured on a less inhibitory medium prior to identification. Salmonella spp appear to be yellow or colourless colonies, often with a dark centre. As there are many bacteria that also look like Salmonella on DCA, it is widely recommended that more selective agars are used for the identification of Salmonella, namely xylose lysine deoxycholate (XLD) agar. This growth medium is heat-sensitive and should be poured and cooled as soon as possible after addition of the deoxycholate, otherwise it tends to become very soft and difficult to handle. It has a pH of approximately 7.3, and when poured and cooled, appears light to dark pink in colour. DCA agar contains:

'Lab Lemco' powder 5g/l
Peptone 5g/l
Lactose 10g/l
Sodium citrate 8.5g/l
Sodium thiosulfate 5.4g/l
Ferric citrate 1g/l
Sodium deoxycholate 5g/l
Neutral red 20mg/l
Agar 12g/l


Template:WH Template:WikiDoc Sources