原文是all 12 hESC lines derived from such arrested embryos have been% C$ A% A2 f& D( W# C! i
shown to be karyotypically normal and their pluripotency 7 ?7 B6 ^1 b9 v% D0 P3 ~: b' p) T+ }and differentiation potential has been demonstrated both in * L' i/ o+ H5 r: p/ Dvitro and in vivo.