The stratum corneum is the outermost layer of the epidermis and is thus directly exposed to the environment. It consists mainly of corneocytes, which are keratinocytes in the last stage of differentiation, having neither nuclei nor organelles.

中文翻译：

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表皮葡萄球菌的多任务表面蛋白：积累相关蛋白 (Aap)

角质层是表皮的最外层，因此直接暴露于环境中。它主要由角质细胞组成，它们是分化最后阶段的角质形成细胞，既没有细胞核也没有细胞器。