What structure is normally found in the nuclei of immature blood cells?

What structure is normally found in the nuclei of immature blood cells?

• A. Nucleolus
• B. Golgi apparatus
• C. Heinz bodies
• D. Dohle bodies

Answer: (A)

The nucleolus is the structure normally found in the nuclei of immature blood cells. It is the site inside the nucleus where ribosomal RNA is synthesized and ribosome assembly begins, which is essential for the rapid protein production needed during development of血 cells, especially erythroblasts. In young erythrocyte precursors, the nucleolus is typically prominent on cytology stains. As these cells mature, the nucleolus becomes less distinct and the nucleus is eventually extruded in erythropoiesis. The Golgi apparatus lies in the cytoplasm, while Heinz bodies and Dohle bodies are cytoplasmic inclusions, not nuclear features.

The nucleolus is the structure normally found in the nuclei of immature blood cells. It is the site inside the nucleus where ribosomal RNA is synthesized and ribosome assembly begins, which is essential for the rapid protein production needed during development of血 cells, especially erythroblasts. In young erythrocyte precursors, the nucleolus is typically prominent on cytology stains. As these cells mature, the nucleolus becomes less distinct and the nucleus is eventually extruded in erythropoiesis. The Golgi apparatus lies in the cytoplasm, while Heinz bodies and Dohle bodies are cytoplasmic inclusions, not nuclear features.