The occurrence of bipolar neurons in the abdominal mass ganglia of a pulmonate molluse (Cryptomphallus aspersa).
D000005:Abdomen; D000818:Animals; D001369:Axons / Q000502:physiology; D005724:Ganglia / Q000166:cytology*; D009474:Neurons; D009489:Neurosecretion; D012908:Snails / Q000033:anatomy & histology*