4Wiesner R J,Swift H,Zak R.Purification of mitochondrial DNA from total celluar DNA of small tissue samples.Gene,1991,98 (2):277～281.
5Linnane A W,Marzuki S,Ozawa T ,et al.Mitochondrial DNA mutations as an important contributor to ageing and degenerative diseases.Lancet,1989,1 (8639):642～645.
6Richter C,Park J W,Ames B N.Normal oxidative damage to mitochondrial and nuclear DNA is extensive.Proc Natl Acad Sci USA,1988,85 (17):6465 ～ 6467.
