the site of origin of five polypeptides ( 60,000 , 58,000 , 52,000 , 49,000 , 46,000 ) could therefore be attributed to the basal cell layer , the remaining three polypeptides ( 67,000 , 64,000 , 62,000 ) being synthesized in the outer metabolically active epidermal layers .
C0221925
basal cell layer
C0014520
epidermal