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When a cell destroys itself through apoptosis, there is a specific process:

  1. The cell shrinks
  2. The DNA in the nucleus breaks down
  3. The mitochondria in the cell break down
  4. The cell breaks down into membrane-bound fragments
  5. The phospholipid, phosphatidylserine, appears on the surface
  6. Macrophages (and other phagocytic cells) have protein receptors which recognise phosphatidylserine
  7. Phosphatidylserine binds to these protein receptors, causing the phagocytic cells to engulf the membrane-bound fragments.
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14y ago

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