Trpm5^tm1Dgen

A bacterial lacZ gene was inserted into the gene such that the endogenous gene promoter drives expression of beta-galactosidase. While RT-PCR analysis detects highest levels of gene transcript in gallbladder and lower levels in thymus, tongue, stomach, small intestine, large intestine and cecum, beta-galactosidase expression from this allele is detectable in thymus, trachea, and testis.