Different volume fractions of propolis extracted with alcohol and citric acid were used to make solution for queen larvae preservation test.

采用不同体积分数的蜂胶乙醇提取物和柠檬酸配制成保鲜液，进行蜂王幼虫保鲜试验。

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Previous work at Queen's University found that prawns show prolonged rubbing when an antenna was treated with weak acetic acid but this rubbing was reduced by local anesthetic.

CNN: Crabs 'feel and remember pain' suggests new study