| gram-negative aerobic rods and cocci | <microbiology> A group of gram-negative bacteria consisting of rod- and coccus-shaped cells. They are both aerobic (able to grow under an air atmosphere) and microaerophilic (grow better in low concentrations of oxygen) under nitrogen-fixing conditions but, when supplied with a source of fixed nitrogen, they grow as aerobes. (12 Dec 1998) |
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| gram-negative anaerobic bacteria | <microbiology> A large group of anaerobic bacteria which show up as pink (negative) when treated by the gram-staining method. (12 Dec 1998) |
| gram-negative anaerobic cocci | <microbiology> A group of anaerobic coccoid bacteria that show up as pink (negative) when treated by the gram-staining method. (12 Dec 1998) |
| gram-negative anaerobic straight, curved, and helical rods | <microbiology> A group of anaerobic, rod-shaped bacteria that show up as pink (negative) when treated by the gram-staining method. (12 Dec 1998) |
| gram-negative bacteria | <microbiology> Bacteria which lose crystal violet stain but are stained pink when treated by gram's method. (12 Dec 1998) |
| gram-negative bacterial infections | <microbiology> Infections caused by bacteria that show up as pink (negative) when treated by the gram-staining method. (12 Dec 1998) |
| gram-negative chemolithotrophic bacteria | <microbiology> A large group of bacteria including those which oxidise ammonia or nitrite, metabolise sulfur and sulfur compounds, or deposit iron and/or manganese oxides. (12 Dec 1998) |
| gram-negative facultatively anaerobic rods | <microbiology> A large group of facultatively anaerobic, rod-shaped bacteria that show up as pink (negative) when treated by the gram-staining method. (12 Dec 1998) |
| gram-negative oxygenic photosynthetic bacteria | <microbiology> Widely distributed unicellular or multicellular bacteria. The cyanobacteria use chlorophyll a and phycobilins for oxygenic photosynthesis while genera in the prochlorales use both chlorophyll a and b but not phycobilins. (12 Dec 1998) |
| gram-positive | <microbiology> Bacteria that retain the stain or that are resistant to decolourisation by alcohol during Gram's method of staining. This is a primary characteristic of bacteria whose cell wall is composed of a thick layer of peptidologlycan containing teichoic and lipoteichoic acid complexed to the peptidoglycan. See: gram-negative (06 Oct 1997) |
| gram-positive asporogenous rods | <microbiology> A gram-positive, non-spore-forming group of bacteria comprising organisms that have morphological and physiological characteristics in common. (12 Dec 1998) |
| gram-positive asporogenous rods, irregular | <microbiology> A group of irregular rod-shaped bacteria that stain gram-positive and do not produce endospores. (12 Dec 1998) |
| gram-positive asporogenous rods, regular | <microbiology> A group of regular rod-shaped bacteria that stain gram-positive and do not produce endospores. (12 Dec 1998) |
| gram-positive bacteria | <microbiology> Bacteria which retain the crystal violet stain when treated by gram's method. (12 Dec 1998) |
| gram-positive bacterial infections | <microbiology> Infections caused by bacteria that retain the crystal violet stain (positive) when treated by the gram-staining method. (12 Dec 1998) |
Synonyms : Gram Negative Bacteria
Synonyms : Infections, Gram-Negative Bacterial, Bacterial Infection, Gram-Negative, Bacterial Infections, Gram Negative, Gram Negative Bacterial Infections, Gram-Negative Bacterial Infection, Infection, Gram-Negative Bacterial, Infections, Gram Negative Bacterial
Synonyms : Gram Negative Chemolithotrophic Bacteria
Synonyms : Gram Negative Facultatively Anaerobic Rods
Synonyms : Gram Negative Oxygenic Photosynthetic Bacteria
| gram molecule |
the molecular weight of a substance expressed in grams; the basic unit of amount of substance adopted under the Systeme International d'Unites
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| Gram stain |
Gram's method: a staining technique used to classify bacteria; bacteria are stained with gentian violet and then treated with Gram's solution; after being decolorized with alcohol and treated with safranine and washed in water, those that retain the gentian violet are Gram-positive and those that do not retain it are Gram-negative
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| gram-negative |
(of bacteria) being of or relating to a bacterium that does not retain the violet stain used in Gram's method
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| gram-positive |
(of bacteria) being or relating to a bacterium that retains the violet stain used in Gram's method
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| gramicidin |
an antibiotic produced by a soil bacterium; used chiefly as an antiseptic in treating local infections produced by Gram-positive bacteria
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| gram | pasture grass of plains of South America and western North America |
|---|---|
| gram | an antibiotic produced by a soil bacterium |
| gram | the grasses: chiefly herbaceous but some woody plants including cereals |
| gram | cosmopolitan herbaceous or woody plants with hollow jointed stems and narrow long-bladed leaves |
| gram | grasses |
| gram | the grasses: chiefly herbaceous but some woody plants including cereals |
| gram | cosmopolitan herbaceous or woody plants with hollow jointed stems and narrow long-bladed leaves |
| gram | pasture grass of plains of South America and western North America |
| gram | pasture grass of plains of South America and western North America |
| gram | studies of the formation of basic linguistic units |
| gram | a school for young children |
| gram | a secondary school emphasizing Latin and Greek in preparation for college |