Transcriptional Profiling of the Adult Hair Follicle Mesenchyme Reveals R-spondin as a Novel Regulator of Dermal Progenitor Function oleh Andrew Hagner, Wisoo Shin, Sarthak Sinha, Whitney Alpaugh, Matthew Workentine, Sepideh Abbasi, Waleed Rahmani, Natacha Agabalyan, Nilesh Sharma, Holly Sparks, Jessica Yoon, Elodie Labit, John Cobb, Ina Dobrinski, Jeff Biernaskie