Which combination is used for staining reticulocytes?

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Multiple Choice

Which combination is used for staining reticulocytes?

Staining reticulocytes hinges on revealing the residual RNA inside these immature red cells. Supravital dyes like Brilliant Cresyl Blue and New Methylene Blue specifically precipitate and stain that RNA, producing a clear blue reticular network within the cell. This makes reticulocytes stand out on a blood smear and allows counting them accurately. The other stains have different purposes: Wright-Giemsa and May-Grunwald Giemsa are used for general smear morphology and differential counts, not for visualizing the RNA network. Prussian blue targets iron in hemosiderin, not RNA, so it doesn’t show reticulocytes. Hence, the combination of Brilliant Cresyl Blue with New Methylene Blue directly highlights the reticular network characteristic of reticulocytes.

Staining reticulocytes hinges on revealing the residual RNA inside these immature red cells. Supravital dyes like Brilliant Cresyl Blue and New Methylene Blue specifically precipitate and stain that RNA, producing a clear blue reticular network within the cell. This makes reticulocytes stand out on a blood smear and allows counting them accurately. The other stains have different purposes: Wright-Giemsa and May-Grunwald Giemsa are used for general smear morphology and differential counts, not for visualizing the RNA network. Prussian blue targets iron in hemosiderin, not RNA, so it doesn’t show reticulocytes. Hence, the combination of Brilliant Cresyl Blue with New Methylene Blue directly highlights the reticular network characteristic of reticulocytes.

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