Trichuris trichiura is the Latin and taxonomical name of a human parasite, the whipworm, which causes the disease of trichuriasis when it infects a human. It is a particular type of roundworm.
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Mark Lane tube station[?]
Marlborough Road tube station[?]
North End tube station[?] (aka Bull & Bush; never opened)
North Weald tube station[?]
Ongar ...