Stratum granulosum

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What Wikipedia says

The stratum granulosum (or granular layer) is a thin layer of cells in the epidermis lying above the stratum spinosum and below the stratum corneum (stratum lucidum on the soles and palms). Keratinocytes migrating from the underlying stratum spinosum become known as granular cells in this layer.

Excerpt from the Wikipedia article “Stratum granulosum”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Modified from the original Grey's diagram here: http://en.wikipedia.org/wiki/Image:Gray941.png, Public domain, via Wikimedia Commons.