After ingestion the eggs hatch, and the larvae are released into the intestinal tract. They burrow through the intestinal wall and into a blood vessel, where they are then carried on a circuitous journey through the host's body. Eventually they end up back in the host's intestines when they are ready to become adults. The cycle begins again after the adult female roundworms produce eggs, which are then passed in the host's feces (Figure 31).
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Henriëtte