1. Human sperm cells express CD44
Rani Bains, B.Sc., Jude Adeghe, Ph.D., Ray J Carson, Ph.D. 
Fertility and Sterility 
Volume 78, Issue 2, Pages (August 2002)
DOI: /S (02)

2. FIGURE 1
Human sperm stained with a fluorescent double-antibody system to CD44 (original magnification, ×1,000). (A), One example field under phase contrast. (B), The same field showing fluorescently stained CD44 on sperm cells.
Bains. Human sperm cells express CD44. Fertil Steril 2002.
Fertility and Sterility  , DOI: ( /S (02) )

3. FIGURE 2
Example of Western blots of proteins isolated from lysates of human sperm from two donors, performed in triplicate, showing bands in lanes 1–3 (donor 1) and lanes 4–6 (donor 2) with a molecular weight of approximately 73 kDa, corresponding to soluble CD44. The molecular weight markers are shown in lane M.
Bains. Human sperm cells express CD44. Fertil Steril 2002.
Fertility and Sterility  , DOI: ( /S (02) )