原文是all 12 hESC lines derived from such arrested embryos have been% o, I6 |4 t! `( b- x
shown to be karyotypically normal and their pluripotency ( z9 @) t( e T* @and differentiation potential has been demonstrated both in x( b4 K5 Y, n# t8 L& f" Evitro and in vivo.