1. Effect of choline-supplemented sodium-depleted slow freezing versus vitrification on mouse oocyte meiotic spindles and chromosome abnormalities 
Jack Y.J. Huang, M.D., Hai-Ying Chen, M.Sc., Seang-Lin Tan, M.D., Ri-Cheng Chian, Ph.D. 
Fertility and Sterility 
Volume 88, Issue 4, Pages (October 2007)
DOI: /j.fertnstert
Copyright © 2007 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1
Morphology of meiotic spindle organization and chromosome alignment in normal and abnormal oocytes. (a) Oocyte with normal meiotic spindle organization and chromosome alignment. (b) Oocyte with abnormal meiotic spindle organization and chromosome alignment. 1PB = first polar body.
Huang. Effect of choline-based slow freezing versus vitrification on mouse oocytes. Fertil Steril 2007.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2007 American Society for Reproductive Medicine Terms and Conditions

3. Figure 2
Normal (haploidy) chromosome numbers in parthenogenetically activated oocyte after cryopreservation. The oocyte contains 20 chromosomes.
Huang. Effect of choline-based slow freezing versus vitrification on mouse oocytes. Fertil Steril 2007.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2007 American Society for Reproductive Medicine Terms and Conditions