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【单选题】
2012年10月生理学或医学奖被英国科学家约翰·格登和日本医学教授山中伸弥夺得，他们在细胞核重新编程研究领域做出了杰出贡献。目前，山中伸弥和其研究小组已把多种组织（包括肝、胃和大脑）的细胞，转变成了诱导多功能干细胞，并让诱导多功能干细胞分化成了皮肤、肌肉、软骨、神经细胞以及可以同步搏动的心脏细胞。下列相关叙述不正确的是（）
A.
成熟细胞被重新编程的过程中细胞的分化程度逐渐降低
B.
诱导多功能干细胞能分化成神经细胞，体现了诱导多功能干细胞的全能性
C.
诱导多功能干细胞与成熟细胞相比，细胞核内DNA的含量不变
D.
诱导多功能干细胞分化的过程不仅与基因有关，也与细胞的生活环境有关
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not so easy as
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something easy enough
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