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hans christian joachim gram in Science

Gram

[gräm, grăm]
  1. Danish bacteriologist who in 1884 developed a method of staining bacteria, called Gram's stain or Gram's dye, that is used to identify and classify bacteria, often from samples of infected body fluids. The classification, called gram-negative or gram-positive, can be useful in the initial selection of antibiotics to treat the infection.
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