Reporter assay in zebrafish: Individual zebrafish embryos injected with different mouse CRs reporter constructs in equimolar concentration and imaged on dpf. GFP expression in the same embryo is shown at 2, 4, 6, and 8 dpf in the respective row. CR2 embryo shows high level of GFP expression during early embryogenesis and after 4 dpf GFP expression reduces drastically as compared with control embryo. CR1, CR3, and CR6 show comparable GFP expression as in the case of control even after 8 dpf.

Reporter assay in zebrafish : Embryos of different stages injected with zebrafish CR constructs are imaged (phase contrast and GFP). Same embryo is followed for for up to 8 dpf in each row. CR2 shows a high level of GFP at 2dpf which reduces drastically after 4dpf. CR1,3 & 6 show comparable GFP levels as in the case of control even after 8dpf.

Acknowledgments
This image is the copyrighted work of the attributed author or publisher, and ZFIN has permission only to display this image to its users. Additional permissions should be obtained from the applicable author or publisher of the image. Full text @ Genome Biol. Evol.