Avpr1b^tm1Dgen

将细菌的lacZ基因插入，使其由内源性基因驱动β-半乳糖苷酶的表达。在所有分析的组织中都可检测到高水平的RNA转录本。lacZ（β-半乳糖苷酶）的表达在大脑、垂体和睾丸中可检测到。 (Source: The inserted bacterial lacZ gene is expressed under the endogenous promoter, leading to beta-galactosidase (LacZ) in brain, pituitary, and testis, with detectable RNA transcripts in all examined tissues.)