We provide a practical guide for delivering tracers in vivo and use the spinocerebellar pathway as a model system to demonstrate essential steps for successful neuronal circuit analysis in mice. We describe in detail our versatile tracing protocol that exploits wheat germ agglutinin (WGA) conjugated to Alexa fluorophores.
Reeber, S. L., Gebre, S. A., Filatova, N., Sillitoe, R. V. Revealing Neural Circuit Topography in Multi-Color. J. Vis. Exp. (57), e3371, doi:10.3791/3371 (2011).