Thrombospondin-1 plays a critical role in the induction of hair follicle involution and vascular regression during the catagen phase.
Yano, Kiichiro, Lawrence F Brown, Jack Lawler, Tokichi Miyakawa, and Michael Detmar. 2003. “Thrombospondin-1 Plays a Critical Role in the Induction of Hair Follicle Involution and Vascular Regression During the Catagen Phase.”. The Journal of Investigative Dermatology 120 (1): 14-9.