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The influence of the trematode Paragonimus cf. westermani on the NO- and HIF-1α-containing structures in nerve centers of the brain, depending on degree of infection and behavioral responses, has been studied in the crab Eriocheir japonica (De Haan, 1835). The NO-ergic activity in the brain has been found to increase in crabs with a low level of infection and decrease in individuals with a high level...
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