Mouse WNT9B, Tag Free is primarily used in developmental biology and stem cell research to study signaling pathways involved in tissue patterning and organogenesis. It plays a key role in activating the canonical Wnt/β-catenin signaling pathway, making it valuable for investigating cell fate determination, embryonic development, and tissue regeneration. Researchers use the tag-free form in cell culture experiments where native protein conformation is critical, especially in assays requiring high specificity and minimal interference from fusion tags. It is also employed in studies of kidney development and reproductive system formation due to its specific expression patterns during embryogenesis. Additionally, Mouse WNT9B supports research into diseases linked to Wnt pathway dysregulation, such as cancer and developmental disorders, by serving as a recombinant ligand for pathway modulation in vitro.