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单词 Monoderm
释义

Monoderm

英语百科

Gram-positive bacteria

Rod-shaped gram-positive Bacillus anthracis bacteria in a cerebrospinal fluid sample stand out from round white blood cells.
Violet stained gram-positive cocci and pink stained gram-negative rod-shaped bacteria
Gram-positive and -negative cell wall structure
Structure of gram-positive cell wall

Gram-positive bacteria are bacteria that give a positive result in the Gram stain test. Gram-positive bacteria take up the crystal violet stain used in the test, and then appear to be purple-coloured when seen through a microscope. This is because the thick peptidoglycan layer in the bacterial cell wall retains the stain after it is washed away from the rest of the sample, in the decolorization stage of the test.

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