From: Melatonin increases bone mass in normal, perimenopausal, and postmenopausal osteoporotic rats via the promotion of osteogenesis
Group
Quantity
OVX
MT
Sham
A: Sham + Ctrl
8
−
a: Sham + MT
 + 
Early
B: Early + Ctrl
b: Early + MT
Late
C: Late + Ctrl
c: Late + MT