For the progenitor cells grown adherently on a poly(L-lysine) substratum for 7 days without DAPT, there were 30 3. 5% of the differentiated cells expressing P27kip1. sensory epithelia of the saccular macula, utricular macula, and cristae of the three semicircular canals [2]. These hair cells are susceptible to damage from noise trauma, aging, and aminoglycoside […]