Azan

In histology Azan (Az: Azocarmine and An: aniline blue) is used to distinguish cells from the extracellular matrix.
 * Stains→nucleus red/purple.
 * Cytoplasm is stained pink.
 * Red blood cells stained red.
 * Collagen fibers blue.
 * Muscle fibers red.
 * Cartilage and bone matrix deep blue.

Also, in Greek mythology, Azan was the son of Arcas and Erato. Azania in Arcadia was named for him.

Azan