Levitskiĭ E L
Biull Eksp Biol Med. 1980 Jun;89(6):733-5.
Studies on 3H-thymidine incorporation into DNA of 6- and 24-month-old rat liver have shown that part of newly formed DNA of both adult and old species is extracted as single-stranded after hydroxyapatite chromatography. This single-stranded DNA seems likely to be an intermediate product of DNA replication. The transition of the newly formed single-stranded DNA to double stranded proceeds more slowly in the liver of old animals than in adult ones.
对3H-胸腺嘧啶核苷掺入6月龄和24月龄大鼠肝脏DNA的研究表明，成年和老年大鼠肝脏中新形成的DNA的一部分在羟基磷灰石层析后以单链形式被提取出来。这种单链DNA似乎可能是DNA复制的中间产物。新形成的单链DNA向双链的转变在老年动物肝脏中比在成年动物肝脏中进行得更慢。
