gram-positive
Collocations
3ADJ.
against, against, effective, gram-negative
GRAM-POSITIVE + NOUN
bacteria
ADV.
highly
Definitions
adj
That is stained violet by Gram's method
adj
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.
Thesaurus
Synonyms
Antonyms
Idioms & Phrases
Example Bank
3Generally, 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).
WiktionaryNote that L.^([Listeria]) monocytogenes is one of the few Gram-positive bacteria against which vancomycin is not effective — hence the need for ampicillin.
WiktionaryThe 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.
Wiktionary