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If after staining, a smear reveals both purple(Gram +) and red cells(Gram -). This is generally an indication that the smear contains gram positive cells.

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What is a gram variable bacteria?

A gram variable bacteria is a type of bacterium that does not consistently stain as either gram-positive or gram-negative. This variability can make it challenging to identify using traditional Gram staining techniques.


When gram stain performed incubated for a longer period of time examination of the stain B cereus slides revealed a great deal of color variability ranging from an intense blue to shades of pink?

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