The Viability Differences on Oocyte Vitrification Surrounded by Cumulus Cells and Oocyte Vitrification not Surrounded by Cumulus Cells after In Vitro Maturation. - A. A. Muhammad Nur Kasman; Budi Santoso; Widjiati Widjiati; Aucky Hinting; Ni Wajan Tirthaningsih; Reny I'tishom; Budi Utomo; Mochammad Sasmito Djati (ICBBE, 2020)