Establishment of mouse expanded potential stem cells

D.R. is a recipient of the Wellcome Trust Clinical PhD Fellowship for Academic Clinicians. L.A. is a recipient of a Ph.D. fellowship from the Portuguese Foundation for Sciences and Technology, FCT(SFRH/BD/84964/2012). Y. T. was supported by a Japan Society for the Promotion of Science fellowship. A.C.W. was supported by the National Institute of Health Research (RP-PG-0310-10002). M. E-M is supported by an EMBO Fellowship (ALTF938-2014) and Marie Sklodowska-Curie Individual Fellowship. W. R. acknowledges funding from BBSRC (BB/K010867/1) and Wellcome Trust (095645/Z/11/Z). L. Lu is supported by the National Natural Science Foundation of China (31370904 and 30972691). P. L. lab is supported by the Wellcome Trust (grant numbers: 098051 and 206194).