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Gram Positive vs Gram Negative: What's the Difference?

Being able to differentiate bacterial species is important for a host of reasons. While molecular techniques can determine the specific species, even without getting into the molecular nitty gritty, there are phenotypic differences between groups of bacteria that can be used to differentiate them. One such useful classification – if a bacterium is Gram positive or Gram negative - is based on the structure of bacterial cell walls.

Read more: https://www.technologynetworks.com/immunology/articles/gram-positive-vs-gram-negative-323007