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gram-positive

adj

Etymology

From Gram (“a surname”) + positive, after Danish bacteriologist Hans Christian Gram, who invented the Gram staining method.

Definitions

  1. That is stained violet by Gram's method

  2. That stains dark blue or violet after Gram staining, due to large quantities of…

    That stains dark blue or violet after Gram staining, due to large quantities of peptidoglycan in the cell wall.

    • Generally, ionophore antibiotics are highly effective against Gram-positive bacteria but exhibit little or no activity against Gram-negative bacteria (Chen and Wolin, 1979; Watanabe et al., 1981).
    • Note that L.^([Listeria]) monocytogenes is one of the few Gram-positive bacteria against which vancomycin is not effective — hence the need for ampicillin.
    • The majority of Gram-positive (82%) and Gram-negative (64%) genera carry either ribosomal protection genes alone or in combination with efflux/enzymatic genes as illustrated in Table 7.2.

The neighborhood

Vish — recursive loop

No curated loop yet for gram-positive. Loops are being traced one word at a time while the ingestion pipeline matures.

sense glosses and etymology drawn from English Wiktionary · source · CC-BY-SA