Praying mantises, for example, envelop their eggs in a foam-like protective protein case.

例如，螳螂将它们的卵包裹在泡沫状的保护性蛋白质外壳中。

These cells have less of the protective protein keratin in them than other skin cells, for one thing.

一方面，这些细胞比其他皮肤细胞含有更少的保护性角蛋白。

Viruses called " phages, " which are basically chunks of genetic material wrapped in a protective protein, will pierce the cell wall of a bacterium and hijack its genetic machinery, turning the bacterium into a factory for making more viruses.

被称为“噬菌体”的病毒，基本上是包裹在保护性蛋白质中的大块遗传物质，它将穿透细菌的细胞壁，劫持其遗传机制，把细菌变成制造更多病毒的工厂。