Hippocampal areas

Control Months 6

Melatonin Months 6

Control Months 12

Melatonin Months 12

CA 1

88 ± 2.0

97 ± 2^*

45 ± 1.5

65 ± 3.0^*

CA 3

86 ± 2.0

107 ± 2^*

58 ± 1.0

78 ± 3.0^*