The embryonic tissue or developmental layer that gives rise to skin; or a substance that causes skin disease.
From Greek 'derma' (skin) and '-gen' (producing or originating). This term can mean either the source tissue in development or an agent causing dermatological disease.
In plant biology, the dermatogen is the outermost layer of the shoot apex that produces the epidermis—it's nature's way of building a protective outer layer from the inside out.
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