Swine
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Reagent for use in microscopy in solution, used at 0.1%. Cells stained blue have membrane damage and are non-viable while those that do not absorb methylene have membrane integrity and are therefore considered viable. Use in combination with Bürker or Neubauer chamber to estimate total and viable cell concentrations.
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Gram staining is a type of differential staining used in Bacteriology to perform a first approach to bacterial differentiation; Gram-positive bacteria are considered to be those that are visualized in purple color, and Gram-negative bacteria are considered to be those that are visualized in pink color.