Vimentin persists in the mature glia of fish brain.

Adult carp brains were processed for immunohistochemical staining against vimentin and glial fibrillary acidic protein. The shape, density and distribution of immunopositive structures were found to be very similar with both types of antibody. Thus, it appears that vimentin, the cytoskeletal protein typical for immature glia in the early phase of ontogenesis in mammals can also be demonstrated in the adult glia of the phylogenetically older fish brain.