Table 3.

Histological analysis

	Control	Melatonin	p-value
Immature Follicles	7.20 ± 3.23	6.00 ± 2.55	0.66
Mature Follicles *	3.01 ± 0.91	8.75 ± 2.02	0.04
Corpora Lutea	7.86 ± 1.71	5.22 ± 1.05	0.34
Collagen type I*	5.75 ± 0.52	8.52 ± 1.04	0.03
Collagen type III*	3.53 ± 0.28	1.49 ± 0.15	< 0.001
Collagen type I and III ratio	1.62	5.71
Blood vessels	20.13 ± 3.66	18.63 ± 3.65	0.99

Ovarian follicle density, collagen, and blood vessels (mean ± standard deviation) comparing the use of melatonin added to the cryopreservation medium or not, in rat ovarian slide, autologous cryopreserved grafts after the 30th day of transplantation (n = 10 in each group); *p < 0.05 t-test.