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- Apr 11, 2006
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I know that we have Gram + and Gram - bacteria. I just noticed that there is a third category: non-gram staining !!!! What is considered to be non-gram staining???!!!!
Gram - = a bacterium that does not retain the violet stain used in Gram's method.
Gram + = a bacterium that retains the violet stain used in Gram's method
Does it make sense to have a 3rd category?
Here are some examples:
Gram + = Corynebacterium
Gram - = Bordetella
non-gram staining = Ehrlichia (obligate intracellular)
Gram - = a bacterium that does not retain the violet stain used in Gram's method.
Gram + = a bacterium that retains the violet stain used in Gram's method
Does it make sense to have a 3rd category?
Here are some examples:
Gram + = Corynebacterium
Gram - = Bordetella
non-gram staining = Ehrlichia (obligate intracellular)