本文研究河蚌外套膜组织培养细胞分泌珍珠质的药理作用。
The pharmacological function of nacrum secreted by cultured pallium cells of a freshwater oyster was examined.
那粒沙子被她珍珠质的泪水包住了，再也不能碰伤她：它变得光滑，而且不再伤人。
Covered by her nacre tears, the grain of sand could not hurt her anymore: it had become smooth and harmless.
牡蛎会尽职尽忠地为自己腹中的小珠子包裹上一层又一层的珍珠质。 比起那些要从小沙粒开始慢慢成长的珍珠，人工的方法明显会节省很多时间。
The oyster dutifully coats the little marble with anouter layer of pearl and much time is saved not having to grow each pearl upfrom the size of a sand grain.
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