Gram stain - Hutchinson encyclopedia article about Gram stain Printer Friendly
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stain
(redirected from Gram stain)

   Also found in: Dictionary/thesaurus, Medical, Legal, Encyclopedia, Wikipedia 0.01 sec.

stain

Coloured compound that will bind to other substances. Stains are used extensively in microbiology to colour micro-organisms, in histochemistry to detect the presence and whereabouts in plant and animal tissue of substances such as fats, cellulose, and proteins, and in biochemistry to reveal the location of biomolecules, as in gel electrophoresis.



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The Gram stain is still the most important first result from the microbiology laboratory.
Characteristics that are important to note on the sputum Gram stain are very few squamous epithelial cells (less than 25 per low per field, or one to two per high oil field).
However, a review of records from January through August 2007 revealed two occasions on which gram stain had documented preparation and expiration dates prior to the their use, and two occasions on which no records indicated that quality control was conducted for gram stain as required.
 
 
 
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