Superfine open pulled straws vitrification of porcine blastocysts does not require pretreatment with cytochalasin B and/or centrifugation

1. Cuello, C.
2. Sanchez-Osorio, J.
3. Almiñana, C.
4. Gil, M.A.
5. Parrilla, I.
6. Roca, J.
7. Vazquez, J.M.
8. Martinez, E.A.
9. Rodriguez-Martinez, H.