Methods Bone mass in whole body,femur and lumbar spines(L4|L6) was measured by dual energy X|ray absorptiometry(DXA) in 50 SD rats.

• 方法 采用扇形束双能 X 线吸收法（ D X A）测量50只 S D 大鼠全身、股骨和腰椎（ L4? L6）骨量（骨矿含量和密度）。