"stratum granulosum"의 정의 및 의미

What is "stratum granulosum"?

The stratum granulosum is a thin layer of the skin's epidermis composed of cells called granular cells, which play a crucial role in the production of keratin and the formation of the skin's barrier function. These cells contain granules that release lipids and proteins, contributing to the hydration and integrity of the skin.