. 2018 Nov 22;65(1):57–66. doi: 10.1262/jrd.2018-056

Table 2. Preimplantation development of mouse post-ovulatory aged oocytes after IVF.

Exp. group	Time of in vitro aging	No. of oocytes examined	No. (%) of oocytes fertilized	No. of embryos cultured	No. (%)* of embryos developed to
Exp. group	Time of in vitro aging	No. of oocytes examined	No. (%) of oocytes fertilized	No. of embryos cultured	Blastocyst	Arrested	Degenerated
Fresh	0 h	210	181 (86.2) ^b	104	91 (87.5) ^b	9 (8.7)	4 (3.8) ^b

Aged	6 h	228	200 (87.7) ^b	105	84 (80.0)	10 (9.5)	11 (10.5)
Aged	12 h	247	193 (78.1) ^a	113	82 (72.6) ^a	14 (12.4)	17 (15.0) ^a

Values with different superscripts in the same column are significantly different (P < 0.05). * Percentage of cultured embryos.