Microbiology A patient complaints of diarrhea, stool examination shows ova of size <100 gm, which of the following can not be the cause: A Cryptosporidium B Opisthorchis viverni C Isospora D E. histolytica 💡 Explanation A patient complaints of diarrhea, stool examination shows ova of size <100 gm, which of the following can not be the cause: ✓ Correct Answer: B. Opisthorchis viverni