Fgf8^tm1.4Mrt

This allele is a derivative of Fgf8tm1.3Mrt in which mice carrying this allele were mated to beta-actin cre mice, which resulted in heterozygous offspring carrying a recombined Fgf8 allele in which both the neomycin resistance cassette and exons 2 and 3 were deleted. (J:45909)