. 2013 Jun 17;59(5):496–499. doi: 10.1262/jrd.2013-012

Table 1. Proportions of morphologically normal follicles at the primordial, intermediary, and primary stages after ultrarapid vitrification.

Ovarian sections were vitrified	Primordial follicles		Intermediary follicles		Primary follicles
Ovarian sections were vitrified	Mean ± SEM	N	Mean ± SEM	N	Mean ± SEM	N
On the Cryosupport	92.2 ± 2.2^a	239	84.5 ± 4.4^ab	126	77.2 ± 7.8^a	89
On the graphite sheet	93.3 ± 2.0^a	243	81.1 ± 5.4^ab	153	87.0 ± 3.7^a	116
Between graphite sheets	84.3 ± 2.8^ab	647	65.8 ± 5.7^b	478	64.4 ± 14.2^a	138
On the copper plate	70.6 ± 4.3^b	197	69.5 ± 6.2^ab	65	64.1 ± 16.9^a	34
Between copper plates	36.4 ± 9.0^c	226	26.5 ± 11.6^c	208	23.6 ± 12.3^b	105
Non vitrified	90.9 ± 3.8^a	417	87.9 ± 3.9^a	204	70.4 ± 22.6^a	77

Four ovarian sections were used to assess the follicle morphology in each experimental condition. Data are shown as the mean ± SEM. N: number of examined follicles. Different superscript letters (a, b, c) in the same row denote significant difference at P<0.05 by ANOVA followed by Fisher’s PLSD test.