Gram method — noun a staining technique used to classify bacteria; bacteria are stained with gentian violet and then treated with Gram s solution; after being decolorized with alcohol and treated with safranine and washed in water, those that retain the… … Useful english dictionary
Gram method stain solution — (gram) [Hans Christian Joachim Gram, Danish physician, 1853–1938] see Stains and Staining Methods, under stain, and see gram negative and gram positive … Medical dictionary
Gram method — see Stains and Staining Methods, under stain … 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-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's method — n. Biol. a method of differentiating bacteria by staining with a dye, then attempting to remove the dye with a solvent, for purposes of identification. Phrases and idioms: Gram positive (or negative) (of bacteria) that do (or do not) retain the… … Useful english dictionary
Gram stain — noun a staining technique used to classify bacteria; bacteria are stained with gentian violet and then treated with Gram s solution; after being decolorized with alcohol and treated with safranine and washed in water, those that retain the… … Useful english dictionary
Gram's stain — noun a staining technique used to classify bacteria; bacteria are stained with gentian violet and then treated with Gram s solution; after being decolorized with alcohol and treated with safranine and washed in water, those that retain the… … Useful english dictionary
Gram's procedure — noun a staining technique used to classify bacteria; bacteria are stained with gentian violet and then treated with Gram s solution; after being decolorized with alcohol and treated with safranine and washed in water, those that retain the… … Useful english dictionary
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 stain demonstrating gram-positive diplococci in sputum smear.
