• Oct 8, 2025 Microsomal Fraction Of Cell sferred. 4. Microsomal Pellet Isolation: The supernatant containing the microsomal fraction is subjected to ultracentrifugation at a high speed (e.g., 100,000 x g for 60 minutes). This step pellets the microsomes. 5. Pellet Resus BY Ms. Toni Blanda