初代培养物开始第一次传代培养后的细胞,即称为细胞系,如细胞系的生存期限有限,则称之为有限细胞系(finite celline)。细胞分裂存在一个极限,达到该极限值后,细胞将不再分裂并衰老,死亡,不能进行无限增值。
选用新生SD大鼠的髁状突软骨作为原代细胞培养的组织来源,建立髁状突软骨细胞有限细胞系;
The primary MCC separated from the mandibular condylar cartilage of six neonatal SD rats were cultured and a finite cell line was established in vitro.
此否决出现在白宫自2001年以来将国家资助研究局限于有限数目干细胞系之后。
That veto came after a White House move in 2001 to restrict federally funded research to a limited number of stem-cell lines.
此否决出现在白宫自2001年以来将国家资助研究局限于有限数目干细胞系之后。
That eto came after a White House moe in 2001 to restrict federally funded research to a limited number of stem-cell lines.
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