Use of the gram stain in microbiology.

@article{Beveridge2001UseOT,
  title={Use of the gram stain in microbiology.},
  author={Terry J. Beveridge},
  journal={Biotechnic & histochemistry : official publication of the Biological Stain Commission},
  year={2001},
  volume={76 3},
  pages={111-8}
}
The Gram stain differentiates bacteria into two fundamental varieties of cells. Bacteria that retain the initial crystal violet stain (purple) are said to be "gram-positive," whereas those that are decolorized and stain red with carbol fuchsin (or safranin) are said to be "gram-negative." This staining response is based on the chemical and structural makeup of the cell walls of both varieties of bacteria. Gram-positives have a thick, relatively impermeable wall that resists decolorization and… CONTINUE READING

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