1. Assessment of sperm factors possibly involved in early recurrent pregnancy loss 
Aura María Gil-Villa, M.Sc., Wálter Cardona-Maya, M.Sc., Ashok Agarwal, Ph.D., Rakesh Sharma, Ph.D., Ángela Cadavid, M.D., Dr.Sc. 
Fertility and Sterility 
Volume 94, Issue 4, Pages (September 2010)
DOI: /j.fertnstert
Copyright © 2010 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1
Principal component analysis (PCA) biplot. Principal component 1 (PC1) splits the plane: Right side shows observations for percentage normal sperm morphology, sperm concentration, percentage progressive sperm motility, and percentage inhibition of DPPH radical; left side shows observations that reverse these trends and variables negatively correlated with variables located on the right side of the plane, such as thiobarbituric acid–reactive substance (TBARS) and teratozoospermia. Fresh ejaculate in control group (triangles) and recurrent pregnancy loss group (squares). %DFI = DNA fragmentation index.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2010 American Society for Reproductive Medicine Terms and Conditions

3. Figure 2
PCA biplot of fresh ejaculates and motile sperm fraction recovered by the migration-sedimentation method from 23 individuals of the recurrent pregnancy loss (RPL) group and 11 individuals of the controlgroup. Right side: observations with respect to percentage progressive sperm motility and normal sperm morphology. Left side: variables that are negatively correlated with those located in the right of the plane, such as TBARS production and teratozoospermia. Fresh ejaculate of the RPL group (open squares); motile sperm fraction of the RPL group (solid squares); fresh ejaculate of the control group (open triangles); motile sperm fraction of the control group (solid triangles). Abbreviations as in Figure 1.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2010 American Society for Reproductive Medicine Terms and Conditions