. 2013 Nov 9;60(1):9–13. doi: 10.1262/jrd.2013-082

Table 2. Effect of pre-IVM on nuclear maturation of IVG oocytes .

Pre-IVM	No. of oocytes (replicates)	% of oocytes at each stage
Pre-IVM	No. of oocytes (replicates)	GV	GVBD	M I	A I/T I	M II
–	85 (5)	5.0 ± 7.2	2.1 ± 2.9	26.6 ± 9.4^a	15.8 ± 10.7^a	49.4 ± 10.4^a
+	99 (5)	1.3 ± 2.8	0	15.9 ± 4.3^b	2.7 ± 6.1^b	80.1 ± 9.6^b
Control*	120 (5)	0	0	9.6 ± 2.9^b	1.7 ± 2.4^b	88.7 ± 1.9^b

^{a, b} Values (mean ± SD) with different superscripts within columns are significantly different (P<0.05). * The oocytes collected from antral follicles (2 to 8 mm in diameter) served as in vivo-grown controls. GV, germinal vesicle; GVBD, germinal vesicle breakdown; M I, metaphase I; A I/T I, anaphase I/telophase I; M II, metaphase II.