The embryonic stem cell line chHES-3XISTa was derived from heterogeneous chHES-3 cells. chHES-3XISTa showed a new abnormal karyotype of 46,XX with 8 derivation chromosomes and expressed X inactive specific transcript (XIST) in continual culture. Tri-methylation of H3 Lys-27 (H3K27me3) punctate enrichment located in RNA Polymerase II hole was also found in all chHES-3XISTa cells. Pluripotent markers and differentiate capability in vitro were confirmed by immunochemistry staining.
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