Oesophageal-muscle changes in achalasia.
D001706:Biopsy; D002467:Cell Nucleus; D004931:Esophageal Achalasia / Q000473:pathology*; D004947:Esophagus / Q000473:pathology*; D006801:Humans; D006965:Hyperplasia; D009132:Muscles / Q000473:pathology*