Prominin‐1 controls stem cell activation by orchestrating ciliary dynamics by Singer, D, Thamm, K, Zhuang, H, Karbanová, J, Gao, Y, Walker, JV, Jin, H, Wu, X, Coveney, CR, Marangoni, P, Lu, D, Grayson, PRC, Gulsen, T, Liu, KJ, Ardu, S, Wann, AK, Luo, S, Zambon, AC, Jetten, AM, Tredwin, C, Klein, OD, Attanasio, M, Carmeliet, P, Huttner, WB