gram stain

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gram stain

Staining technique for the initial identification of bacteria, devised in 1884 by the Danish physician Hans Christian Gram (1853–1938). The stain reveals basic differences in the biochemical and structural properties of a living cell. A slide containing a smear of bacteria is treated with a purple dye; the slide is then dipped in an iodine solution, followed by an organic solvent (such as alcohol) that can dissolve the dye. Gram-positive bacteria remain purple because they have a thick cell wall that the solvent cannot easily penetrate; gram-negative bacteria lose their colour because they have thin cell walls that allow the solvent to penetrate and remove the dye.

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No references found			The Gram stain is still the most important first result from the microbiology laboratory. Lab basics 202 by Beall, Anne / Medical Laboratory Observer 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). Pathophysiology and laboratory identification of pneumonia by Steinert, Don / FOCUS: Journal for Respiratory Care & Sleep Medicine 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. Harborview lab inspection results in 3-item 483 by Inspection Monitor			grain slope grain sorghum grain spacing Grain Thrower Grain-cleaning Machine Grain-harvesting Combine grainer process grainer salt Grainger Grainger County Grainger, Percy Grainger, Percy Aldridge Graininess graining Gráinne grainstone Graivoron Grakan Tert Grakov, Boris Grakov, Boris Nikolaevich gram Gram Atom Gram determinant Gram Equivalent Gram Molecule gram stain Gram's Method Gram's stain Gram's theorem gram-atomic weight gram-calorie gram-centimeter gram-equivalent weight Gram-Force gram-molecular volume gram-molecular weight gram-negative gram-negative diplococci gram-positive gram-rad gram-roentgen Gram-Schmidt orthogonalization process gram-variable gram-weight gramadevata gramagrass Gramatica Gramatky, Hardie Grambling State University Grameen Bank gramenite			gram molecule Gram negative Gram negative Gram negative Gram Negative Aerobic Bacilli Gram negative bacteria Gram negative bacteria Gram negative bacteria Gram negative bacterium Gram negative bacterium Gram negative bacterium Gram Negative Cocci Gram panchayat Gram per Squared Metre Gram positive Gram positive Gram positive Gram positive Gram Positive Bacillus Gram positive bacteria Gram positive bacteria Gram positive bacteria Gram positive bacterium Gram positive bacterium Gram positive bacterium Gram Positive Cocci Gram positive rod Gram postive Gram postive Gram postive gram stain Gram staining Gram staining Gram staining Gram Vikas Kosh Gram's method Gram's method Gram's procedure Gram's solution Gram's stain Gram's stain Gram's stain Gram's stain Gram's theorem gram(me) gram- gram-atomic mass gram-atomic weight gram-atomic weight Gram-calorie Gram-calorie Gram-calorie gram-centimeter gram-centimeter Gram-Charlier series Gram-Charlier Series Approximation Gram-equivalent weight Gram-equivalent weight Gram-equivalent weight Gram-force gram-ion

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