Fig. 2.

Time-dependent changes of the mitochondria-occupied area (percentage of total) of the cytoplasm in maturing oocytes. a Time-dependent changes of the mitochondria-occupied area −420 min before and 300 min after GVBD obtained from 16 oocytes. The occurrence of GVBD was defined as the 0–min (A and B). b Time-dependent changes of the mitochondria-occupied area −120 min before and 120 min after GVBD obtained from 27 oocytes. c Time-dependent changes of the mitochondria-occupied area between −120 min before and 120 min after polar body (PB) extrusion obtained from 27 oocytes. The occurrence of PB extrusion was defined as the 0 min. Data points were compared by Fisher’s PLSD test following ANOVA. a–c, p < 0.01. Characteristics of oocytes examined in live imaging study were shown in Table 1. Data and donor age were shown mean ± SD