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Necrobiosis is the physiological death of a cell, and can be caused by conditions such as basophilia, erythema, or a tumor. It is identified both with and without necrosis.

It is associated with necrobiosis lipoidica and granuloma annulare.

Necrobiosis differs from apoptosis, which kills a damaged cell to protect the body from harm.

'Necrobiosis' at Dorland's Medical Dictionary