!schistosoma!!other trematode
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|transmitted to human<br>by percutaneous invasion of metacercariaecercariae||transmitted to human<br>by oral ingestion of metacercariae
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|bisexualdioecious雌雄別体||ambisexualhermaphrodite雌雄同体|-|does not require 2nd intermediate host<br>(no metacercariae stage)||requires 2nd intermediate host
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