| ACU | acquired cold urticaria; acute care unit; agar colony-forming unit; ambulatory care unit |
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| ADT | Accepted Dental Therapeutics; adenosine triphosphate; admission, discharge, transfer; agar-gel diffu... |
| AGD | agar gel diffusion; agarose diffusion; alpha-ketoglutarate dehydrogenase |
| AGDD | agar gel double diffusion |
| AGP | acid glycoprotein; agar gel precipitation; azurophil granule protein |
| extension bridge | A fixed partial bridge denture in which the pontic is retained only on one side by an abutment tooth. Synonym: extension bridge. (05 Mar 2000) |
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| fixed bridge | A restoration of one or more missing teeth which cannot be readily removed by the patient or dentist; it is permanently attached to natural teeth or roots which furnish the primary support to the appliance. Synonym: bridge. (05 Mar 2000) |
| agar | <cell culture, chemical, microbiology> This gelatinous material, an extract from red algae (mainly Gelidium and Gracilaria species), is most frequently used as a culture medium, especially for bacteria. It is also used as a thickener in foods, but humans cannot digest it. (06 May 1997) |
| agar-gel reaction | <immunology> The reaction between an antibody and an antigen during an immunology lab procedure where the two are allowed to diffuse toward each other through an agar-gel medium. Lines of precipitation form in the places on the gel where the two react with each other and shows where the reaction has occurred. (09 Oct 1997) |
| ascitic agar | A form of serum agar. (05 Mar 2000) |
| bile salt agar | An agar medium containing lactose, peptone, sodium taurocholate, and neutral red, for the growth and isolation of Gram-negative rods. (05 Mar 2000) |
| birdseed agar | Media prepared from Guizottia abyssinica seeds used in culturing and in the presumptive diagnosis of Cryptococcus neoformans. (05 Mar 2000) |
| blood agar | <cell culture> An agar-based medium which hasbeen enriched with sterilised, defibinated blood (sheep, rabbit or horse). It is used for primary plating andsubculturing, especially to determine bacterial haemolysis. (09 Oct 1997) |
| Bordet-Gengou potato blood agar | Glycerine-potato agar with 25% of blood, used for the isolation of Bordetella pertussis. (05 Mar 2000) |
| brain-heart infusion agar | A medium used for the isolation of fastidious microorganisms, especially fungi. (05 Mar 2000) |
| brilliant green salt agar | A highly selective culture medium consisting of agar with peptone, lactose, sodium taurocholate, brilliant green, and picric acid solution used in the primary isolation of enteric pathogens such as Salmonella species. (05 Mar 2000) |
| MacConkey agar | Medium containing peptone, lactose, bile salts, neutral red, and crystal violet used to identify Gram-negative bacilli and characterise them according to their status as lactose fermenters. Fermenters appear as red colonies while nonfermenters are colourless. (05 Mar 2000) |
| rice-Tween agar | A useful medium for the development of the differential chlamydospores in Candida albicans and for preparation of slide cultures for other forms of sporulation in other fungal species. (05 Mar 2000) |
| chocolate agar | Blood agar heated until the blood becomes brown or chocolate in colour, used especially to isolate Haemophilus influenza or Neisseria species. (05 Mar 2000) |
| cholera agar | An alkaline agar medium for cultivating Vibrio cholerae. (05 Mar 2000) |