信息素引起了卵黄蛋白从脂肪组织分离出来并转移到血液中，通过血液被运送至头腹腺，然后转变成凝胶物，因而蜜蜂姐姐们得以用这些凝胶物喂养幼虫。
The pheromone causes vitellogenin to move from fat tissue into the blood, where it is transported to the head glands and converted into a jelly that older sisters feed to the larvae.
由于这种碳成分的化学分离完全发生在固态中，产生的组织结构是一种细致的铁素体与渗碳体的机械混合物。
Since this chemical separation of the carbon component occurs entirely in the solid state, the resulting structure is a fine mechanical mixture of ferrite and cementite.
对从排泄物中分离的脱落肠组织进行切片，采用光学显微镜和透射电镜观察及图像分析。
The dropped intestinal tissue from the excretion were sliced and observed by light microscope, transmission electron microscope and picture-analysis.
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