GRAM'S STAINING

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BIPIN PURI

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Published on August 26, 2023 6:35:35 AM ● Video Link: https://www.youtube.com/watch?v=73vB0Rm34Jk

Duration: 2:39

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Gram staining is a common technique used to differentiate two large groups of bacteria based on their different cell wall constituents. The Gram stain procedure distinguishes between Gram positive and Gram negative groups by coloring these cells red or violet. Gram positive bacteria stain violet due to the presence of a thick layer of peptidoglycan in their cell walls, which retains the crystal violet these cells are stained with. Alternatively, Gram negative bacteria stain red, which is attributed to a thinner peptidoglycan wall, which does not retain the crystal violet during the decoloring process.

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