PCGF6-PRC1 suppresses premature differentiation of mouse embryonic stem cells by regulating germ cell-related genes. by Endoh, M, Endo, T, Shinga, J, Hayashi, K, Farcas, A, Ma, K, Ito, S, Sharif, J, Endoh, T, Onaga, N, Nakayama, M, Ishikura, T, Masui, O, Kessler, B, Suda, T, Ohara, O, Okuda, A, Klose, R, Koseki, H