Here, we present a refined protocol to effectively reveal biotinylated dextran amine (BDA) labeling with a fluorescent staining method through a reciprocal neural pathway. It is suitable for analyzing the fine structure of BDA labeling and distinguishing it from other neural elements under a confocal laser scanning microscope.
Xu, D., Cui, J., Wang, J., Zhang, Z., She, C., Bai, W. Improving the Application of High Molecular Weight Biotinylated Dextran Amine for Thalamocortical Projection Tracing in the Rat. J. Vis. Exp. (134), e55938, doi:10.3791/55938 (2018).