%0 Journal Article %T MEK/ERK signaling directly and indirectly contributes to the cyclical self-renewal of spermatogonial stem cells %A Hasegawa, Kazuteru %A Namekawa, Satoshi H. %A Saga, Yumiko %J Stem Cells %V 31 %N 11 %P 2517-2527 %@ 1066-5099 %D 2013-11-01 %I Oxford University Press %~ DeepDyve