Key points are not available for this paper at this time.
Closed vitrification based on DMSO and EG preserves the ultrastructural features and the ability to respond to the Ca²⁺ ionophore A23187 significantly better than does slow freezing with 0.3 M sucrose. Damage to organelles involved in the Ca²⁺(i) modulation might reduce the developmental competence of cryopreserved oocytes.
Gualtieri et al. (Wed,) studied this question.