The fine structure of iridial constrictor pupillae muscle of Alligator mississippiensis.
D000818:Animals; D007498:Iris / Q000166:cytology*; D008854:Microscopy, Electron; D009130:Muscle, Smooth / Q000166:cytology; D009132:Muscles / Q000166:cytology*; D009474:Neurons / Q000166:cytology; D012104:Reptiles / Q000033:anatomy & histology*