Hair cell innervation in the fetal human cochlea.


Twelve cochleas from human fetuses ranging in age from 13 to 22 gestational weeks were investigated by transmission electron microscopy in order to follow the development of hair cell innervation. First, we were able to confirm the two general gradients of cochlear maturation, i.e. 'internal-to-external' and 'base-to-apex'. In the 14th week of gestation… (More)


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