A Powerful Tool for Elucidating Disease Mechanisms Conditional knockout (cKO) mice are widely utilized to investigate gene-specific functions and model human diseases. In contrast to conventional knockout (KO) models, cKO mice enable targeted gene deletion restricted to particular tissues or induced at specific time points. This approach offers superior spatiotemporal control over gene inactivation, resulting in more physiologically relevant models for studying human disease pathogenesis.

​Rosa26 KI mice​ refer to the targeted insertion of an exogenous gene into the Rosa26 locus on mouse chromosome 6. This locus is a highly conserved non-coding genomic region that is broadly active across all cell types and developmental stages. Its promoter exhibits strong transcriptional activity, and its intron contains a unique transcription start site (ATG), enabling stable and reproducible expression of the inserted gene.