Origin of regeneration factor.
D000818:Animals; D001774:Blood Chemical Analysis; D007082:Ileum / Q000502:physiology; D008115:Liver Regeneration; D008297:Male; D008642:Mesenteric Veins; D010179:Pancreas / Q000098:blood supply; D011169:Portal Vein; D051381:Rats; D014680:Veins