myoglobulin

Actin and myoglobulin are the compositions building muscles' stretching function. Microtubulin is the basic substance which provides the flagellum and cilium the function of movement.

蛋白及球蛋白乃是构成肉伸缩机构的组成部分，微管蛋白是予鞭毛及纤毛能的基本物质。