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

Table 3. Effect of pre-IVM on fertilization of IVG oocytes.

Pre-IVM	No. of oocytes (replicates)	% normal fertilization			% of polyspermy	% total fertilization
Pre-IVM	No. of oocytes (replicates)	% of ESH	% of 2PN	% of subtotal	% of polyspermy	% total fertilization
–	124 (5)	8.7 ± 9.3	56.8 ± 12.4	65.6 ± 7.9^a	7.5 ± 5.1	73.1 ± 4.4^a
+	207 (7)	14.0 ± 12.3	58.9 ± 16.3	73.0 ± 12.6^a	6.3 ± 3.0	79.7 ± 13.6^ab
Control*	148 (6)	20.6 ± 18.5	66.7 ± 17.3	87.3 ± 6.2^b	5.1 ± 4.6	93.1 ± 4.9^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. ESH, enlarged sperm head; 2PN, two pronuclei.