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's stain — or Gram stain noun Etymology: Hans C. J. Gram died 1938 Danish physician Date: 1903 1. a method for the differential staining of bacteria by treatment with a watery solution of iodine and the iodide of potassium after staining with a… … New Collegiate Dictionary
Gram's stain — a method of staining bacterial cells, used as a primary means of identification. A film of bacteria spread onto a glass slide is dried and heat fixed, stained with a violet dye, treated with decolourizer (e.g. alcohol), and then counterstained… … The new mediacal 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-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-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-variable — gram vari·able gram ver ē ə bəl, var adj staining irregularly or inconsistently by Gram s stain * * * gram var·i·a·ble (gram varґe ə bəl) appearing to be a mixture of gram positive and gram negative organisms, said of gram positive… … Medical dictionary
Gram-variable — /gram vair ee euh beuhl/, adj. (often l.c.) of or pertaining to bacteria that stain irregularly with Gram s stain, being neither Gram positive nor Gram negative. [1955 60; see GRAM S METHOD] * * * … Universalium
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
Окрашивание По Граму (Gram'S Stain) — метод окрашивания бактериальных клеток, применяемый для их первичной идентификации. Тонкий слой, содержащий бактерии; наносится на предметное стекло, высушивается и фиксируется воздействием тепла; затем окрашивается фиолетовым красителем,… … Медицинские термины
