The significance of the radial nerve cords in asteroids and echinoids.
D000818:Animals; D001369:Axons; D002490:Central Nervous System / Q000166:cytology*; D004447:Echinodermata / Q000033:anatomy & histology*; D008854:Microscopy, Electron; D009454:Neurofibrils; D009474:Neurons / Q000166:cytology; D011826:Radial Nerve / Q000166:cytology; D013569:Synapses / Q000166:cytology