No obvious differences between R1 ES cells and the 4 ES cell clones expressing GFP[ESG(+)] on the proliferation speed, differentiation state and the ratio of normal karyotype were observed.

• R1ES细胞与 4个高效稳定表达 GFP的 ES细胞克隆在细胞增殖速率、分化状态及正常核型率上均无显著差异 ;