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Fecal samples from red deer from polish and belorussian parts of Białowieża Forest were examined by Baermann method. First stage larvae of three species of lung nematodes were found. In polish part in 100% of samples were larvae of E. cervi, in 50% V. sagittatus and in 21% D. noemeri, and in belorussian the level of infection was lower and larvae were in 92%, 36% and 12% of samples respectively. In...
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