Figure 5: Micrographs of ovarian tissue from the same patient. (1 and 2) Histology of fresh OP, (3) light micrograph after cryopreservation with spontaneous ice formation, (4) light micrograph after freezing with initiated ice formation, (5) histology of OP after cryopreservation with spontaneous ice formation, (6) histology of OP after cryopreservation with initiated ice formation. OP: Ovarian piece