1. Why were nuclei being unstained when you used eosin?2. What is the relationship between heterochromatin and the synthetic activity of DNA?3. What is the significance of using different...

1. Why were nuclei being unstained when you used eosin? 2. What is the relationship between heterochromatin and the synthetic activity of DNA? 3. What is the significance of using different histological stains? 4. Aside from H&E, what other staining methods are applicable in Golgi apparatus, mitochondria, and nucleic acid? What are the differences? 5. How essential is Periodic Acid- Schiff Reagent? please answer with 3-5 sentences