title: An electron microscope study of the smooth muscle cell in acquired and congenital megacolon.
mesh_terms: D000328:Adult; D001706:Biopsy; D003106:Colon / Q000473:pathology*; D005260:Female; D006627:Hirschsprung Disease; D006801:Humans; D008297:Male; D008531:Megacolon / Q000473:pathology*; D008854:Microscopy, Electron; D008875:Middle Aged; D009130:Muscle, Smooth / Q000473:pathology*; D012007:Rectum / Q000473:pathology