The patient is diagnosed with a bacterial infection after gram-positive cocci are detected in the fluid sample.The Gram stain involves ________.

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The Gram stain involves timed, sequential applications of crystal violet dye, iodine, an alcohol rinse, and a contrasting counterstain to the sample. This staining technique is used to differentiate bacterial species into two groups: Gram-positive and Gram-negative. Gram-positive bacteria will retain the crystal violet dye and appear purple under a microscope, whereas Gram-negative bacteria will lose the crystal violet stain and appear red or pink with the counterstain. In this case, the presence of gram-positive cocci indicates a bacterial infection caused by a Gram-positive species.

The Patient Is Diagnosed with a Bacterial Infection After Gram-Positive