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gram-neg·a·tiveor Gram-neg·a·tive (grăm′nĕg′ə-tĭv)
Of, relating to, or being a bacterium that does not retain the violet stain used in the Gram stain method.
(Microbiology) designating bacteria that fail to retain the violet stain in Gram's method
adj. (often l.c.)
(of bacteria) not retaining the violet dye when stained by Gram's method.
Relating to a group of bacteria that generally are resistant to the effects of antibiotics or the actions of the body's immune cells. Gram-negative bacteria have relatively thin cell walls and, when subjected to a specialized laboratory staining method, do not change color. Compare gram-positive.
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|Adj.||1.||Gram-negative - (of bacteria) being of or relating to a bacterium that does not retain the violet stain used in Gram's method|
bacteria, bacterium - (microbiology) single-celled or noncellular spherical or spiral or rod-shaped organisms lacking chlorophyll that reproduce by fission; important as pathogens and for biochemical properties; taxonomy is difficult; often considered to be plants
n. gram-negativo, resultado de la aplicacion del método de Gram de decoloración de una bacteria o tejido por medio de alcohol.