1. Fertility and Sterility
Differences in mitochondrial and nuclear DNA status of high-density and low-density sperm fractions after density centrifugation preparation 
Michael O’Connell, Ph.D., Neil McClure, M.D., Lesley A Powell, Ph.D., E.Kristine Steele, M.D., Sheena E.M Lewis, Ph.D. 
Fertility and Sterility 
Volume 79, Pages (March 2003)
DOI: /S (02)

2. FIGURE 1
Long polymerase chain reaction mitochondrial DNA fragments in high-density (A) and low-density (B) fractions. M = marker; C = control.
O’Connell. Sperm DNA after Percoll. Fertil Steril 2003.
Fertility and Sterility  , DOI: ( /S (02) )

3. FIGURE 2
Incidence of single, double and multiple deletions in high-density and low-density fractions. ■ 90% fraction; 45% fraction. All mitochondrial DNA fragments for each fraction add up to 100%. WT = wild type.
O’Connell. Sperm DNA after Percoll. Fertil Steril 2003.
Fertility and Sterility  , DOI: ( /S (02) )

4. FIGURE 3
Mitochondrial deletion size in high-density and low-density fractions. ■ 90% fraction; 45% fraction. All mitochondrial DNA fragments for each fraction add up to 100%. WT = wild type.
O’Connell. Sperm DNA after Percoll. Fertil Steril 2003.
Fertility and Sterility  , DOI: ( /S (02) )

5. FIGURE 4
Nuclear DNA fragmentation in high-density and low-density fractions. ■ 90% fraction; 45% fraction. Values are means (±SE, as indicated by the bars). *P<.05, Student t-test for paired samples.
O’Connell. Sperm DNA after Percoll. Fertil Steril 2003.
Fertility and Sterility  , DOI: ( /S (02) )