[Phase contrast microscopic observations on early degenerating process of the cochlear sensory cell].
D000818:Animals; D003051:Cochlea / Q000187:drug effects / Q000473:pathology*; D006168:Guinea Pigs; D006317:Hearing Loss, Noise-Induced / Q000473:pathology; D008858:Microscopy, Phase-Contrast; D013997:Time Factors