Regeneration vs. Fibrosis: Understanding Tissue Repair

Regeneration and fibrosis are distinct tissue repair processes.

Regeneration

  • Damaged tissue replaced with same-type tissue via stem/progenitor cell proliferation.
  • Rapid, complete; restores normal structure and function.

Fibrosis (Scarring)

  • Damaged tissue replaced with fibrous connective tissue (collagen) via fibroblast proliferation.
  • Slower, less complete; scar tissue may not fully restore function.

Both can occur simultaneously or sequentially. The balance determines repair outcome, influenced by injury severity, tissue type, and individual health.

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