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Grams stain
Gram's stain
Gram's stain (gramz) n. a method of staining bacterial cells, used as a primary means of identification. The bacterial cells are stained with a violet dye, treated with decolorizer (e.g. alcohol), and then counterstained with red dye.
Gram-negative bacteria lose the initial stain but take up the counterstain, so that they appear red microscopically.
Gram-positive bacteria retain the initial stain, appearing violet microscopically. [ H. C. J. Gram (1853–1938), Danish physician]
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Utility of Gram stain for the microbiological analysis of burn wound surfaces
Magazine article from: Archives of Pathology & Laboratory Medicine; 11/1/2003; ; 700+ words
; ...determine the degree of correlation of Gram stain with culture for the microbiological...the degree of correlation between Gram stain and culture for the microbiological...receipt by the laboratory, a direct Gram stain was performed, followed by planting...
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Genital Gram stains unreliable as STI detectors.(Gynecology)
Magazine article from: OB GYN News; 5/1/2006; ; 503 words
; ...WASHINGTON -- Genital Gram stains alone lack the diagnostic...probe without a Gram stain, 68 visits (5%) included a Gram stain without a DNA probe...included both a Gram stain and a DNA probe to...preps and genital Gram stains performed on patients...
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Comparison of DNA hyrbridization with Gram stain for the detection of bacterial vaginosis among asymptomatic pregnant women
Magazine article from: Infectious Diseases in Obstetrics and Gynecology; 9/1/2004; ; 674 words
; ...pathogens). In all 197 paired Gram stain/ DNA results were available for analysis. DNA and Gram stain results were significantly correlated...Lactobacilusi spp. by Gram stain. Among the 35 intermediate Gram stains, 23 were positive for vaginal...
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Gram stains from EDTA tubes.(Answering Your Questions)
Magazine article from: Medical Laboratory Observer; 7/1/2004; ; 700+ words
; ...vacutainer tubes with EDTA additive (liquid or dry) for Gram-stain examinations? I know that EDTA and other additives...containing tubes, using both routine hematology stains and/or the Gram stain. (1-9) I am unaware, however, of a reference...
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Fungal Conidiospores in a Peritoneal Fluid Gram Stain
Magazine article from: Archives of Pathology & Laboratory Medicine; 1/1/2005; ; 700+ words
; ...etiology of her presumed peritonitis. Gram staining of a concentrated sample...On review of the direct-specimen Gram stain, it was evident that the structures...the first reported case in which Gram stains of the direct peritoneal fluid specimen...
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The Gram stain goes molecular.
Magazine article from: Medical Laboratory Observer; 5/1/2008; ; 700+ words
; ...process continues to revolve around the Gram stain, which is performed in laboratories...treatments. (1) Unfortunately, the Gram stain, invented in 1884, is now...old. Physicians still rely on basic Gram-stain results for the first 24 to...
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Gram Stain Rules Out GC, Chlamydia.
Magazine article from: OB GYN News; 5/15/2000; ; 648 words
; ST. PETERSBURG, FLA. -- Gram stain is a good first screening test to rule...women for chlamydia and gonorrhea using Gram staining, the results of which were...chain reaction (PCR) analysis. The Gram stain slides were examined in the office...
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Gram Stain Kit: improved staining quality.(Product News)
Magazine article from: Clinical Lab Products; 10/1/2006; 432 words
; The gram reaction is essential for accurate bacterial identification. Hardy Diagnostics' new Gram Stain Kit--Advanced features improved reagents...provide a superior, brighter staining of Gram-positive organisms, especially those...
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Quantitative vaginal fluid sialidase correlates with Nugent's score vaginal Gram stain testing in symptomatic women
Magazine article from: Infectious Diseases in Obstetrics and Gynecology; 9/1/2004; ; 575 words
; ...vaginal fluid sialidase to vaginal Gram stain and other standardized clinical testing...were measured including Nugent's Gram stain score ("gold standard...We also observed that, similar to Gram stain, sialidase determination appeared...
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Gram Stain Pen: marks glass slides. (New Products).
Magazine article from: Laboratory Equipment; 3/1/2003; 377 words
; The Secureline Gram Stain Pen contains solvent-resistant ink for marking glass microscope...frosted or smooth portion of the slide. Markings will resist Gram and other bacteriological stain processing. The vivid red ink is heatfixable. Precision...
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Gram's stain
Book article from: The Columbia Encyclopedia, Sixth Edition
Gram's stain laboratory staining technique...their cell walls. The Gram stain, named after its developer...the staining procedure, and gram-negative bacteria, which...dye, crystal violet, which stains all bacterial cells blue...
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Gram Staining
Book article from: World of Microbiology and Immunology
...stained the negative bacteria red. The Gram stain is still considered the definitive...consideration is the fact that some Gram negative bacteria release endotoxins...develop new antibacterial drugs, the Gram stain is the method by which scientists...
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Gram reaction
Book article from: A Dictionary of Plant Sciences
...bacteria are subjected, in the laboratory, to a certain staining procedure called the Gram stain or Gram's stain (after the Danish scientist Christian Gram (1853–1938) who first devised the technique in 1884). The bacteria are...
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Gram‐negative
Book article from: A Dictionary of Food and Nutrition
Gram‐negative, Gram‐positive A method of classifying...retain crystal‐violet dye (Gram stain) after staining and decolorizing with...after the Danish botanist H. C. J. Gram (1853–1938).
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Gram, Hans Christian Joachim (1853-1938)
Book article from: World of Microbiology and Immunology
...that became widely known as Gram staining . At that time, the...methods were already being used. Gram borrowed from a procedure initially...alkaline aniline solutions to stain bacteria cells. Experimenting with pneumococci bacteria, Gram first applied Gentian violet...
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