A study of nonmyelinated nerves in the rat and rabbit heart.
D000818:Animals; D001341:Autonomic Nervous System / Q000033:anatomy & histology*; D006321:Heart / Q000294:innervation*; D008854:Microscopy, Electron; D009411:Nerve Endings / Q000166:cytology*; D011817:Rabbits; D051381:Rats