求助一篇文献，谢谢

fan0414

Regulating the balance between symmetric and asymmetric stem cell division in the developing brain: k1 Y$ I" u7 w4 C3 m; J8 E8 C
Egger B, Gold KS, Brand AH.5 Z! H9 C* O4 J9 M

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Gurdon Institute and Department of Physiology, University of Cambridge, Cambridge, UK.4 J9 \# R; `) f: P2 s) i. X; |2 u
http://www.ncbi.nlm.nih.gov/pubmed/21502820

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