| NOUN | act | Gram's method, Gram method, Gram's procedure, Gram's stain, Gram stain | a staining technique used to classify bacteria |
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| Meaning | 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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| Synonyms | Gram method, Gram's procedure, Gram's stain, Gram stain | |
| Broader | staining | (histology) the use of a dye to color specimens for microscopic study |
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