14-3-3 proteins are involved in signalling processes in neuronal cells. Using isoform-specific antibodies we have examined the variation in 14-3-3 isoform neurolocation in normal and scrapie-infected murine brain and show that in defined areas of the brain there are significant changes associated with the pathology of the disease process. The appearance of 14-3-3 proteins in the cerebrospinal fluid (CSF) is a consequence of neuronal disease and the detection of specific isoforms of the 14-3-3 proteins in the CSF is characteristic of some neurodegenerative diseases. In this study, monitoring specifically for the gamma 14-3-3 isoform in the CSF by both Western-blot analysis and ELISA we can show a level of correlation between the assays.