HT Histotechnician

Category - Staining

Trypan blue vitally stains which specific cell structure?
  1. Cytoplasm
  2. Mitichondria
  3. Nucleus
  4. Reticulo-Endothelial System
Explanation
Answer: D - Reticulo-Endothelial System
Trypan blue vitally stains the Reticulo-Endothelial System. Vital staining is the selective staining of living cell constituents demonstrating cytoplasmic structures by phagocytosis of the dye particle. Other specific cell structures stated in the choices are not vitally stained by trypan blue.
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