Egyptian blue, more than 5,000 years old, covered tombs, statues, and murals, its bright color a symbol of ancient artistry. But its actual nature how it was created, what it was that provided it with ...

RECENTLY1, homogeneous visual pigments ranging in λmax from 491 mµ to 501 mµ have been obtained from a number of different mammalian retinæ. The present work deals with the homogeneity and ...

Upon physical examination, there was a linear band of brown pigment extending from the eponychium to the free edge of the otherwise smooth nail plate ().Dermoscopy showed a homogeneous linear ...