gram's iodine

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• 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 method — /ˈgræmz mɛθəd/ (say gramz methuhd) noun a method of bacterial staining in which the film is first stained with crystal violet and then with Gram s iodine solution. It permits the classification of bacteria, Gram positive species keeping the… …  

• Iodine — (IPAEng|ˈaɪədaɪn, ˈaɪədɪn, or IPA|/ˈaɪədiːn/; from el. ιώδης iodes violet ), is a chemical element that has the symbol I and atomic number 53. Naturally occurring iodine is a single isotope with 74 neutrons. Chemically, iodine is the least… …   Wikipedia

• 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 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 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'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

• 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's solution — noun a solution used in staining bacteria by Gram s method; consists of one part iodine and two parts potassium iodide and 300 parts water • Hypernyms: ↑solution * * * noun Usage: usually capitalized G Etymology: after H. C. J. Gram : a solution… …   Useful english dictionary

• Iodine — An essential element in the diet used by the thyroid gland to make thyroid hormones. The two most important thyroid hormones are thyroxine (T4) and triiodothyronine (T3). Thyroxine (T4) has four iodine molecules attached to its structure, while… …   Medical dictionary

• 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… …   Universalium