Assertion: epidermis's cell | /r/CapableOf | concentrate keratin
Facets:
Source sentences:
text: In the palms of the hands and the soles of the feet (sometimes knees, elbows, knuckles,) this layer is stabilized and built by the stratum lucidum (clear phase) which allows the cells to concentrate keratin and toughen them before they rise into a typically thicker, more cohesive SC.