这两种蛋白质的结构和功能特性与母乳中的蛋白质完全一样，而提纯过程与从细菌和酵母中提炼药用蛋白质类似。
The proteins have the same structure and functional properties as those found in natural breast milk, and the process for extracting them is analogous to that used routinely for the production of therapeutic proteins from organisms like bacteria and yeast.