research EXPRESSION OF CONCERN: Dermal papilla cell‐secreted biglycan regulates hair follicle phase transit and regeneration by activating Wnt/β‐catenin
This study found that biglycan, a protein secreted by dermal papilla cells, plays a critical role in hair follicle cycle regulation and regeneration in mice by activating the Wnt/β-catenin signalling pathway, suggesting its potential as a treatment target for hair loss.