Which stain serves as the primary nuclear stain in Pap smear?

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Multiple Choice

Which stain serves as the primary nuclear stain in Pap smear?

Explanation:
Nuclear staining in Pap smear relies on Harris hematoxylin to color nuclei blue to blue-black, providing crisp nuclear detail against the cytoplasm. This stain is applied first and is stabilized by differentiation and bluing. The other components, OG-6 and EA-50, are cytoplasmic stains that give contrast to the cell interiors, helping differentiate cell types, while Papanicolaou refers to the overall staining procedure, not a nuclear stain itself. Therefore, Harris hematoxylin is the primary nuclear stain.

Nuclear staining in Pap smear relies on Harris hematoxylin to color nuclei blue to blue-black, providing crisp nuclear detail against the cytoplasm. This stain is applied first and is stabilized by differentiation and bluing. The other components, OG-6 and EA-50, are cytoplasmic stains that give contrast to the cell interiors, helping differentiate cell types, while Papanicolaou refers to the overall staining procedure, not a nuclear stain itself. Therefore, Harris hematoxylin is the primary nuclear stain.

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