Persistent nausea, vomiting, and diarrhea in an immunocompetent elderly man.
D000369:Aged, 80 and over; D001706:Biopsy; D003457:Cryptosporidiosis / Q000175:diagnosis* / Q000469:parasitology / Q000473:pathology; D003458:Cryptosporidium / Q000302:isolation & purification*; D003967:Diarrhea / Q000209:etiology*; D005243:Feces / Q000469:parasitology; D005753:Gastric Mucosa / Q000469:parasitology* / Q000473:pathology; D006651:Histocytochemistry; D006801:Humans; D008297:Male; D008853:Microscopy; D009325:Nausea / Q000209:etiology*; D014839:Vomiting / Q000209:etiology*