gram-positive


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Related to gram-positive: Gram-positive cocci

gram-positive

 [gram-poz´ĭ-tiv]
retaining the stain or resisting decolorization by alcohol in Gram's method of staining; see Gram stain. This is a primary characteristic of bacteria whose cell wall is composed of peptidoglycan and teichoic acids.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

gram-pos·i·tive

(gram-pos'i-tiv), In this expression gram begins with lowercase g but: Gram stain.
Refers to the ability of a type of bacterium to resist decolorization with alcohol after being treated with crystal violet stain, which imparts a violet color to the bacteria when viewed by light microscopy. This reaction is usually an indication that the outer structure of the bacterium consists of a cytoplasmic membrane surrounded by a thick rigid bacterial cell wall composed of peptidoglycan. See: Gram stain.
Farlex Partner Medical Dictionary © Farlex 2012

gram-positive

or

Gram-positive

(grăm′pŏz′ĭ-tĭv)
adj.
Of, relating to, or being a bacterium that retains the violet stain used in the Gram stain method.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

gram-pos·i·tive

(gram-poz'i-tiv)
Refers to the ability of a bacterium to resist decolorization with alcohol after being treated with Gram crystal violet stain, imparting a violet color to the bacterium when viewed by light microscopy.
See: Gram stain
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

Gram-positive

see GRAM'S STAIN.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

Gram-positive

Referring to a bacteria that takes on a purplish-black color when exposed to Gram's stain.
Mentioned in: Aminoglycosides
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.

gram-pos·i·tive

(gram-poz'i-tiv)
Refers to the ability of a type of bacterium to resist decolorization with alcohol after being treated with crystal violet stain, which imparts a violet color to the bacteria when viewed by light microscopy.
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
Sucrose fatty acid esters (emulsifiers) enhanced the effect of nisin on Gram-positive bacteria.
* A review of the Gram-Positive Bacterial Infections products under development by companies and universities/research institutes based on information derived from company and industry-specific sources.
Oritavancin is a semisynthetic glycopeptide with bactericidal activity against almost all gram-positive pathogens, including methicillin , vancomyein-, and linezolid-resistant S.
[2,4] Gram-positive organisms retain the crystal violet and appear deep purple in color, while Gram negatives appear red.
Work led by Dr Mark Blaskovich at The University of Queensland's Institute for Molecular Bioscience's Centre found that Cannabidiol was remarkably effective at killing a wide range of Gram-positive bacteria, including bacteria that have become resistant to other antibiotics, and did not lose effectiveness after extended treatment.
Among all the isolates, 62 (62%) isolates were gram-positive while 36 (36%) isolates were found to be gram-negative and 02 (02%) were Candida sp.
Multiplex identification of gram-positive bacteria and resistance determinants directly from positive blood culture broths: evaluation of an automated microarray-based nucleic acid test.
Helcococcus ovis is a slow-growing, pyridoxal-dependent, gram-positive coccus belonging to the Peptostreptococcaceae family.
such as marine bacteria, Gram-positive bacteria, hydrogen sulfides
Gram-negative isolates were predominant 76.27%.Staphylococcus aureus was most frequent among Gram-positive 20.7% and Escherichia coli 15.72% in Gram negative isolates.
Bacteria come in two flavors: Gram-positive and Gram-negative.

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