Microscopic anatomy of the cardiac ganglion of Limulus polyphemus.
D000818:Animals; D002452:Cell Count; D003445:Crustacea / Q000033:anatomy & histology*; D005260:Female; D005724:Ganglia / Q000033:anatomy & histology*; D006321:Heart / Q000294:innervation*; D008297:Male; D009474:Neurons / Q000166:cytology