A vasoactive factor in plasma.
D000818:Animals; D004285:Dogs; D008722:Methods; D008970:Molecular Weight; D009119:Muscle Contraction; D009130:Muscle, Smooth; D010949:Plasma / Q000032:analysis; D011169:Portal Vein; D014655:Vascular Resistance; D014662:Vasoconstrictor Agents / Q000097:blood*
D014662:Vasoconstrictor Agents