1. Fraction of the peripheral blood concentration of CD56+/CD16−/CD3− cells in total natural killer cells as an indication of fertility and infertility 
Vassiliki I Michou, B.Sc., Panagiotis Kanavaros, M.D., Ph.D., Vassilis Athanassiou, M.D., Ph.D., George B Chronis, M.D., Ph.D., Stelios Stabamas, Vassilis Tsilivakos, M.D., Ph.D. 
Fertility and Sterility 
Volume 80, Pages (September 2003)
DOI: /S (03)

2. FIGURE 1
Mean (±SD) percentage of endometrial-type NK cells in total peripheral blood NK cells per study group. Infertile groups 2 and 3: 4.7 ± 2.3; and fertile groups 1 and 4: 8.9 ± 5.1, base:total sample (99 subjects).
Michou. Endometrial-type NK cells and infertility. Fertil Steril 2003.
Fertility and Sterility  , DOI: ( /S (03) )