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The influence of levamisol on the Ievel of total protein in haemolymph of bees infected with Varroa destructor. The studies were performed in 1997 in bee colonies with carnica queens. Levamisol in dose 2,5 mg/l and 5 mg/l of sugar syrup was given to experimental group, while the control one was treated with the same dose of sugar syrup. From May to September, once a month, the segments of honeycombs...
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