Whole-mount immunohistochemistry of the brain.

The gross anatomical distribution of an antigen is typically mapped using a combination of serial sectioning, immunocytochemistry, and three-dimensional reconstruction. This is a tedious and time-consuming procedure, which introduces an array of potential alignment and differential shrinkage errors and requires considerable experience and specialized equipment. In particular, it is unsuited for routine screening applications.

Neurogranin expression identifies a novel array of Purkinje cell parasagittal stripes during mouse cerebellar development.

Markers that reveal the parasagittal organization of cerebellar Purkinje cells may be grouped into two classes based on the time during development when they are expressed. In mice, early-onset markers are defined by their heterogeneous expression in clusters of Purkinje cells during late embryogenesis, which disappears shortly following birth. Late-onset markers are generally not expressed until about 1 week after birth and do not reach a stable striped expression pattern until about 3 weeks postnatally.