Which stain is used as the second counterstain in Pap smear?

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Multiple Choice

Which stain is used as the second counterstain in Pap smear?

Explanation:
Pap staining relies on a sequence of stains that create distinct colors in nuclei and cytoplasm to help differentiate cell types. After staining the nuclei with a blue-black nuclear stain, the cytoplasm is treated with two counterstains to give contrasting colors. The first cytoplasmic counterstain is Orange G, which highlights keratinized and certain cytoplasmic components. The second cytoplasmic counterstain is EA-50 (Eosin Azure), which adds another level of color differentiation to the cytoplasm of non-keratinizing cells, enhancing contrast between different cell types and aiding recognition of maturation and abnormalities. So, the stain used as the second counterstain in Pap smear is EA-50.

Pap staining relies on a sequence of stains that create distinct colors in nuclei and cytoplasm to help differentiate cell types. After staining the nuclei with a blue-black nuclear stain, the cytoplasm is treated with two counterstains to give contrasting colors. The first cytoplasmic counterstain is Orange G, which highlights keratinized and certain cytoplasmic components. The second cytoplasmic counterstain is EA-50 (Eosin Azure), which adds another level of color differentiation to the cytoplasm of non-keratinizing cells, enhancing contrast between different cell types and aiding recognition of maturation and abnormalities. So, the stain used as the second counterstain in Pap smear is EA-50.

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