在一些特殊的位置——与骨髓窦状毛细血管紧邻的干细胞巢中,一些老年实验鼠有着和年轻小鼠增殖分化能力相同的“年轻”造血干细胞。
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President Xi: China and France should jointly prevent a new cold...
By Chris Michael
“As the world goes through transformation and turbulence not seen in a century, China and France should uphold their independence and jointly...