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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Immunohistochemical localization of 2',3'-cyclic nucleotide 3'-phosphodiesterase in adult bovine cerebrum and cerebellum.

We have previously shown that 2',3'-cyclic nucleotide 3'-phosphodiesterase ( CNP; EC in rat central nervous tissues can be immunohistochemically stained with anti-bovine CNP serum. However, the anti-bovine CNP serum prepared in our laboratory has only weak cross-reactivity with rat CNP. Sections of bovine nervous tissues were found to be stained effectively with the serum, and the localization of CNP has been revealed in greater detail. We describe here the immunohistochemical localization of CNP in adult bovine cerebrum and cerebellum. CNP stained was localized in myelin sheaths, oligodendrocytes, and the processes of oligodendrocytes; astrocytes and neurons were negative. All myelinated nerve fibers appeared to be stained with the anti-CNP serum. Perineuronal and perivascular oligodendrocytes, and oligodendrocytes extending their processes to isolated myelin fibers were stained. Interfascicular oligodendrocytes, however, did not react or reacted faintly to the anti-CNP serum; only their processes were reactive. Comparison with the stain for S-100 protein was helpful to distinguish oligodendrocytes from astrocytes particularly when both glial cells were situated together at the perineuronal and perivascular positions.[1]


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