Protei are critical to all a ects of growth and development of body ti ues and nece ary for the building of muscles, blood, skin, internal orga , hormones, and enzymes.

• 蛋白质对机体组织的生长发育至关重要，也是构建肌肉、血液、皮肤、内脏、激素和酶的必需物质。