Which stain turns plasma cell cytoplasm red?

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Multiple Choice

Which stain turns plasma cell cytoplasm red?

Explanation:
Plasma cells synthesize a lot of immunoglobulins, so their cytoplasm is rich in RNA. Methyl green-pyronin uses two dyes: methyl green binds DNA and stains nuclei green, while pyronin binds RNA and stains cytoplasm red. The RNA-rich cytoplasm of plasma cells therefore turns red, making them stand out against the green-stained nuclei. Other stains listed don’t specifically highlight RNA content in the cytoplasm, so they don’t produce the characteristic red cytoplasm seen with this stain.

Plasma cells synthesize a lot of immunoglobulins, so their cytoplasm is rich in RNA. Methyl green-pyronin uses two dyes: methyl green binds DNA and stains nuclei green, while pyronin binds RNA and stains cytoplasm red. The RNA-rich cytoplasm of plasma cells therefore turns red, making them stand out against the green-stained nuclei. Other stains listed don’t specifically highlight RNA content in the cytoplasm, so they don’t produce the characteristic red cytoplasm seen with this stain.

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