Immunohistochemical examination of S-100 protein and substance P in the inner ear of the rat.

S-100 protein and substance P in the inner ear of the rats on decalcified specimens was investigated immunohistochemically. Immunoreactivity of S-100 protein and substance P was found in various parts of inner ear tissues. These results suggest the possibility of immunohistochemical study of decalcified and paraffinized inner ear tissues.