Abstract

Green fluorescent protein (GFP) is firmly established as a fluorescent reporter for the imaging of specific tissues in zebrafish. The employment of other reporters such as DsRed in transgenic zebrafish has made multicolored labeling experiments possible. To date, several DsRed transgenic lines have been generated for lineage labeling, transplantation assays, and commercial applications. Advances in multicolored labeling experiments will depend on the implementation of newly engineered reporters and fusion proteins, as well as on innovative experiments that exploit the power of direct visualization.