gram-positive

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gram-positive

[′gram ¦päs·əd·iv]
(microbiology)
Of bacteria, holding the color of the primary stain when treated with Gram's stain.
References in periodicals archive ?
The most common pathogens relevant to clinical practice can be subdivided into four groups: dermatophytes, yeasts, moulds and gram-positive bacteria.
On the basis of the difference described above, explain why ampicillin is more effective against Gram-positive bacteria.
Infection-causing Gram-positive bacteria include Staphylococcus aureus and Clostridium difficile.
Staphylococcus aureus(2 versions) - A common gram-positive bacteria, "staph" can manifest as minor skin infections or major, life-threatening conditions like sepsis and pneumonia.
No one knew what substance Gram-positive bacteria released to make us sick.
A new type of quinolone antibiotic, T-3811 has a wide antibacterial spectrum and beneficial effects on gram-positive bacteria.
The topics include two-component signal transduction and chemotaxis, the structure and assembly of type IV pilins, structural determinants of Haemophilus influenzae adherence to host epithelia as variations of type V secretion, and injectosomes in gram-positive bacteria.
However, its lytic activity is limited to certain Gram-positive bacteria and is less effective against Gram-negative bacteria, including foodborne pathogens.
The gram-positive bacteria Streptomyces californicus and Bacillus cereus are known inhabitants of water-damaged buildings, and the gram-negative bacterium Pseudomonas fluorescens is found in many indoor and outdoor environments.
The oxazolidinones are a new antibiotic class with broad activity against gram-positive bacteria.
They expected that gram-negative bacteria would bind to the TWTCP and subtly change the wafer's color by their presence in its pores, whereas so-called gram-positive bacteria wouldn't bind because they don't contain lipid A.
Those bacterial isolates extracted from the surrounding waters were found to be most antibody-productive in accordance to health status results, and gram-positive bacteria, in comparison with the more populous gram-negative bacteria, were determined to have a negative effect on antibiotic production against the test organisms.

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