Tessaracoccus Arenae
''Tessaracoccus arenae'' is a Gram-positive, facultatively anaerobic, non-spore-forming and non-motile bacterium from the genus ''Tessaracoccus ''Tessaracoccus'' is a Gram-positive, non-spore-forming, facultatively anaerobic and non-motile bacterial genus from the family Propionibacteriaceae The Propionibacteriaceae are a family of Gram-positive bacteria In bacteriology, gram-posi ...'' which has been isolated from sea sand. References Propionibacteriales Bacteria described in 2017 {{Propionibacterineae-stub ...
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Gram-positive
In bacteriology, gram-positive bacteria are bacteria that give a positive result in the Gram stain test, which is traditionally used to quickly classify bacteria into two broad categories according to their type of cell wall. Gram-positive bacteria take up the crystal violet stain used in the test, and then appear to be purple-coloured when seen through an optical 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. Conversely, gram-negative bacteria cannot retain the violet stain after the decolorization step; alcohol used in this stage degrades the outer membrane of gram-negative cells, making the cell wall more porous and incapable of retaining the crystal violet stain. Their peptidoglycan layer is much thinner and sandwiched between an inner cell membrane and a bacterial outer membrane, causing them to take up the counterstain ...
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