About the cover
June 2008 Volume 26 No 6
A Nomarski image of a live zebrafish embryo at 16.5 hours post-fertilization. The rainbow effect was created by slightly pulling out the differential interference contrast slider. Meng et al. and Doyon et al. demonstrate targeted genetic modification of the zebrafish germ line using zinc-finger nucleases. (pp 695 and 702) Credit: Sharon L. Amacher
