1. Use of frozen-thawed testicular sperm for intracytoplasmic sperm injection 
Wolfgang Küpker, M.D., Ph.D., Peter N Schlegel, M.D., Safaa Al-Hasani, Ph.D., Paolo Fornara, M.D., Ph.D., Rainer Johannisson, Ph.D., Jörg Sandmann, M.D., Thilo Schill, M.D., Monika Bals-Pratsch, M.D., Michael Ludwig, M.D., Klaus Diedrich, M.D., Ph.D. 
Fertility and Sterility 
Volume 73, Issue 3, Pages (March 2000)
DOI: /S (99)

2. Figure 1 Open testicular biopsy (two biopsy sites).
Küpker. Frozen-thawed sperm. Fertil Steril 2000.
Fertility and Sterility  , DOI: ( /S (99) )

3. Figure 2 Extracted testicular tissue before freezing.
Küpker. Frozen-thawed sperm. Fertil Steril 2000.
Fertility and Sterility  , DOI: ( /S (99) )

4. Figure 3
Sertoli cell–only pattern with focal spermatogenesis. Toluidine blue/pyronine stain. Original magnification, ×1,000).
Küpker. Frozen-thawed sperm. Fertil Steril 2000.
Fertility and Sterility  , DOI: ( /S (99) )

5. Figure 4 Protocol for freezing and thawing of testicular tissue.
Küpker. Frozen-thawed sperm. Fertil Steril 2000.
Fertility and Sterility  , DOI: ( /S (99) )