Burn and Rand's hypothesis.
D000109:Acetylcholine / Q000378:metabolism*; D000818:Animals; D001808:Blood Vessels / Q000187:drug effects; D002415:Cats; D002490:Central Nervous System / Q000187:drug effects; D003106:Colon / Q000187:drug effects; D004285:Dogs; D005260:Female; D006168:Guinea Pigs; D006197:Hair / Q000187:drug effects; D006321:Heart / Q000187:drug effects; D006651:Histocytochemistry; D007422:Intestines / Q000187:drug effects; D008297:Male; D009119:Muscle Contraction / Q000187:drug effects*; D009411:Nerve Endings / Q000187:drug effects; D009541:Nictitating Membrane / Q000187:drug effects; D009638:Norepinephrine / Q000378:metabolism*; D011817:Rabbits; D013154:Spleen / Q000187:drug effects; D013564:Sympathetic Nervous System / Q000502:physiology*; D013623:Tail; D014599:Uterus / Q000187:drug effects; D014649:Vas Deferens / Q000187:drug effects
D000109:Acetylcholine; D009638:Norepinephrine