Gram's staining method

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• Staining — is an auxiliary technique used in microscopy to enhance contrast in the microscopic image.In biochemistry it involves adding a class specific (DNA, proteins, lipids, carbohydrates) dye to a substrate to qualify or quantify the presence of a… …   Wikipedia

• Gram staining — (or Gram s method) is an empirical method of differentiating bacterial species into two large groups (Gram positive and Gram negative) based on the chemical and physical properties of their cell walls.cite book | last = Bergey | first = David H.… …   Wikipedia

• Gram's solution — gramz n a watery solution of iodine and the iodide of potassium used in staining bacteria by Gram s stain Gram gräm Hans Christian Joachim (1853 1938) Danish physician. Gram introduced his method for the differential staining of bacteria in 1884 …   Medical dictionary

• Gram-negative — bacteria lose the crystal violet stain (and take the color of the red counterstain) in Gram s method of staining. This is characteristic of bacteria that have a cell wall composed of a thin layer of a particular substance (called peptidoglycan).… …   Medical dictionary

• Gram's stain — or Gram stain gram n 1) a method for the differential staining of bacteria that involves fixing the bacterial cells to a slide and staining usu. with the basic dye crystal violet, treating with an iodine solution to fix the dye, washing with… …   Medical dictionary

• Gram-positive — bacteria retain the color of the crystal violet stain in the Gram stain. This is characteristic of bacteria that have a cell wall composed of a thick layer of a particular substance (called peptidologlycan). The Gram positive bacteria include… …   Medical dictionary

• Gram (disambiguation) — Gram is a unit of measurement of mass. Otherwise, gram may refer to: gram, the Greek based suffix meaning drawing or representation. Contents 1 Places 2 People …   Wikipedia

• Gram's method — [gramz] n. [after Hans C. J. Gram (1853 1938), Dan physician] a method of staining bacteria for the purpose of classification, involving treatment with crystal violet, an iodine solution, and alcohol: the violet stain is retained by Gram positive …   English World dictionary

• Gram method — Gram stain an empirical staining procedure in which microorganisms are stained with crystal violet, treated with 1:15 dilution of strong iodine solution, decolorized with ethanol or ethanol acetone, and counterstained with a contrasting dye,… …   Medical dictionary

• Gram's method — Gram s′ meth′od [[t]græmz[/t]] n. lab (sometimes l.c.) a method of characterizing bacteria that involves staining a slide of fixed specimens with gentian violet, washing with alcohol, and applying a counterstain • Etymology: after Hans C. J. Gram …   From formal English to slang

• Gram'smethod — Gram s method (grămz) n. A staining technique used to classify bacteria in which a bacterial specimen is first stained with crystal violet, then treated with an iodine solution, decolorized with alcohol, and counterstained with safranine. Gram… …   Universalium