Hes1^tm1.1Frad

Tow loxP sites were inserted to flank part of intron 1, exons 2-4 and the 3'UTR. An FRT site-flanked neomycin resistance gene was introduced followed by the second loxP site, and removed later by Flp-mediated recombination. A beta-galactosidase gene was also inserted after the second loxP site. Cre-mediated recombination of the loxP-flanked gene segment creates an in frame translation of beta-galactosidase. (J:167000)