Schematic for oocytes randomized into either the time-lapse system (Group A) or the conventional incubator (Group B). GV = germinal vesicle; MI = metaphase I; MII = metaphase II; 2PN = two pronuclei; Excluded immature (GV and MI) oocytes and unfertilized oocytes in each group were circled in red. The total number of blastocysts associated with each group is circled in blue.
Yang et al. BMC Medical Genomics 2014 7:38 doi:10.1186/1755-8794-7-38