求两篇英文文献，谢谢!

zhusealin

1  杂志：Methods Cell Biol. 2008;86:15-28.& }* n* ~  x; j# A/ y; j
   题目：Autogeneic feeders for the culture of undifferentiated human embryonic stem cells in feeder and feeder-free conditions.
# O3 }6 w  [3 y* O. }7 x1 e5 U, M   作者：Choo A, Ngo AS, Ding V, Oh S, Kiang LS.9 ^% b2 r* U3 q+ }, ?9 J
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2  杂志：Biotechnol Bioeng. 2004 Nov 5;88(3):321-31.! P* `% @; j  y, I" E
   题目：Expansion of pluripotent human embryonic stem cells on human feeders.
$ }: P1 u* [( F# Y, _5 W. i   作者：Choo AB, Padmanabhan J, Chin AC, Oh SK.