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BeginningEasy to perform; requires no experience in microbiology.
For a class of 30. Gram stain separates all bacteria into 2 groups: Gram-positive bacteria stain blue and Gram-negative bacteria stain pink. They stain differentially because they differ in cell wall composition. This stain is basic to bacteriological identification. Requires the use of a microscope equipped with an oil-immersion lens. With teacher instructions.
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