biochemical and histological biomarkers in the midgut of apis mellifera from polluted environment at beheira governorate, egypt.the aim of this study was to analyze the impact of organophosphorus (op) pollutants on oxidative stress and ultrastructural biomarkers in the midgut of the honeybee apis mellifera collected from three locations that differ in their extent of spraying load with op insecticides: a weakly anthropised rural site, bolin which is considered as a reference site; moderately spraying site, el kaza; and a strongly anthropised urban site, tiba with a long history of pesticide use. results showed that high ...201727864738
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