Table 1.

Comparison of apoptotic index (AI) and Ki-67 scores with other groups

	n	Apoptotic index	Ki-67
Control	5	42 (25-58)	3 (2-5)
Sham	5	42 (28-54)	3 (2-4)
Obstruction	5	273 (187-378)	2 (1-3)
Obs + melatonin (at the obstruction time)	5	116 (68-195)	3 (2-5)
Obs - > melatonin (one day after obstruction)	5	143.5 (101-195)	10 (8-13)

Statistic tests performed by Mann-Whitney test, p < 0.001