囊内的股骨颈骨折在年轻病人少见而且处理困难。
An intracapsular femoral neck fracture in a young patient is a rare and difficult injury to manage.
对三角帆蚌胚胎在其外鳃育儿囊内的形态变化进行了显微观察。
The morphological changes of embryo of Hyriopsis cumingii in its nurturing pouch of outer gill were examined.
它们通过特定的受体附着在细胞表面，并被一个内小体囊泡所吸收。
They attach to the cell surface via specific receptors and are taken up by an endosomal vesicle.
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