Zebrafish employ cellular shield to protect blood stem cells from damaging ultraviolet light

While studying the blood stem cells that reside in the kidney of the zebrafish embryo, researchers observed that cells called melanocytes were positioned above the stem cells in an umbrella pattern, and subsequently showed this umbrella served as a shield protecting stem cells from damaging ultraviolet (UV) light. 
Source: NIDDK News - Category: Endocrinology Source Type: news