#necrobiosis__necrobiosi__cell_death  (physiology) the normal degeneration and death of living cells (as in various epithelial cells)
  supertype:  death  the permanent end of all life functions in an organism or part of an organism; "the animal died a painful death"
  subtype:  apoptosis__apoptosi__programmed_cell_death__caspase-mediated_cell_death  a type of cell death in which the cell uses specialized cellular machinery to kill itself; a cell suicide mechanism that enables metazoans to control cell number and eliminate cells that threaten the animal's survival

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