求杂志封面，十分感谢！

hansey

求几个杂志封面，需要分辨率高的，十分感谢！
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Shengkun Sun, Zikuan Guo, Xuren Xiao, Bing Liu, Xiaodan Liu, Pei-hsien Tang, Ning Mao. Isolation of mouse marrow mesenchymal progentors by a novel and reliable method.  Stem Cells, 2003; 21: 527-535( x" x% o1 _, Y
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- [8 m# l) u4 j1 x- ^0 m$ k, ]Zhu H, Guo ZK, Jiang XX, Li H, Wang XY, Yao HY, Zhang Y, Mao N. A protocol for isolation and culture of mesenchymal stem cells from mouse compact bone. Nature Protocols. 2010;5:550-560' ?/ q" j5 C: C3 W2 ?5 s' b1 d" O