Gabbr1^tm1Dgen

将细菌的lacZ基因插入，通过原生基因启动子驱动β-半乳糖苷酶的表达。RT-PCR分析在大多数组织中检测到基因转录，除了硬腭腺、肝脏和胰腺，β-半乳糖苷酶的表达在包括硬腭腺在内的大多数组织中可检测到。 (Source: The lacZ gene from a bacterial strain was inserted, with the endogenous promoter driving beta-galactosidase expression. RT-PCR revealed gene transcript presence in most tissues except salivary gland, liver, and pancreas, while beta-galactosidase activity was detected in most tissues including the salivary gland.)