Drosophila Salivary Chromosomes

Highly replicated polytene chromosomes of the Drosophila salivary gland stained with DAPI (blue) and antibodies directed against gypsy insulator proteins Su(Hw) (green) and Mod(mdg4)2.2 (red).

Credit: Elissa Lei, Ph.D.

Source: http://www.flickr.com/photos/11304375@N07/2993343506/