1. Insulin growth factors may be implicated in human sperm capacitation
Silvia Sánchez-Luengo, Ph.D., Pedro J. Fernández, Ph.D., Alberto Romeu, M.D. 
Fertility and Sterility 
Volume 83, Issue 4, Pages (April 2005)
DOI: /j.fertnstert
Copyright © 2005 American Society for Reproductive Medicine Terms and Conditions

2. FIGURE 1
Sperm preparation depicting strong immunofluorescence reaction by using anti-IGF-1 receptor. Magnification X100.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2005 American Society for Reproductive Medicine Terms and Conditions