Rgs4^tm1Dgen

将细菌的lacZ基因插入，使其由内源性基因驱动表达β-半乳糖苷酶。在所有分析的组织中都检测到了RNA转录，且这个等位基因在所有检查的器官中也都能检测到β-半乳糖苷酶的表达，但在许多器官中，染色仅限于血管。 (Translation from: A bacterial lacZ gene was inserted into the genome, such that the endogenous gene promoter drives expression of beta-galactosidase. RNA transcripts are detectable in all tissues examined, and beta-galactosidase expression from this allele is also detectable in all organs examined, with staining restricted to blood vessels in many.) (Source: No specific reference provided)