In biology, a crystallin is a water-soluble structural protein found in the lens of the eye, accounting for the transparency of the structure and also in cornea, where it can play a similar role. It has also been identified in other places such as the heart and aggressive breast cancer tumors . Since it has been shown that lens injury may promote nerve regeneration, crystallin has been an area of neural research. So far, it has been demonstrated that crystallin β b2 (crybb2) may be a neurit… (More on Crystallin)