title: The effervescent gallbladder.
mesh_terms: D002764:Cholecystitis / Q000175:diagnosis* / Q000000981:diagnostic imaging; D002765:Cholecystography; D004646:Emphysema / Q000175:diagnosis* / Q000000981:diagnostic imaging; D005704:Gallbladder / Q000473:pathology*; D005740:Gases; D006801:Humans; D008297:Male; D008875:Middle Aged; D014463:Ultrasonography
chemical_list: D005740:Gases