Scientists At Johns Hopkins are studying the molecular mechanisms that guidebook the development of hair cells. Reports which include these may very well be a step in the direction of fewer invasive treatments for deafness in which molecular cues may be used to biologically regenerate hair cells within the cochlea. https://www.google.com/maps/d/edit?mid=1OpYy3vFKzmWVN6-GElB3af3vss1iElE&usp=sharing