Paraffin sections through observation, found that feeding the bees EM biological agents in the intestinal Peritrophic matrix (PM) thickness and density have increased.
通过石蜡切片观察，发现饲喂em生物制剂的蜜蜂中肠围食膜厚度和致密度有一定的增加。
Paraffin sections through observation, found that feeding the bees EM biological agents in the intestinal Peritrophic matrix (PM) thickness and density have increased.
通过石蜡切片观察，发现饲喂em生物制剂的蜜蜂中肠围食膜厚度和致密度有一定的增加。
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