Table 1.

Zonal height of each group in growth plate of proximal tibia in rats.

Height (μm)	Control	rhGH 200 μg/kg (s.c.)	P. umbrosa 300 mg/kg (p.o.)
Overall growth plate	453.8 ± 28.6	536.9 ± 29.5 ***	508.6 ± 28.9 **
Resting zone	27.3 ± 3.5	25.1 ± 2.9	29.8 ± 2.5
Proliferative zone	111.7 ± 23.1	110.0 ± 30.0	120.9 ± 5.9
Hypertrophic zone	304.0 ± 46.1	384.0 ± 54.2 **	345.0 ± 22.0 *

Data are shown as mean ± SD. The number of animals is eight per group; * p < 0.05, ** p < 0.01 and *** p < 0.001 vs. control.