. 2020 Apr;9(4):2660–2671. doi: 10.21037/tcr.2020.02.66

Table 4. Expression of Tra2-beta1, HIF-1a, and VEGF in each group.

Groups	Tra2-beta1 (M ± SD)	HIF-1a (M ± SD)	VEGF (M ± SD)
Blank control	1.08±0.13	1.12±0.19	1.13±0.14
Hypoxia model	1.89±0.09	5.46±1.45^a	3.87±0.32^a
siTra2-beta1	0.22±0.04^a,b	0.97±0.09	1.06±0.13
Combined intervention	0.35±0.07^b	3.43±0.87^b,c	2.87±0.48^b,c

^a, P<0.05 compared with the blank control group; ^b, P<0.05 compared with the hypoxia group; ^c, P<0.05 compared with the siTra2-beta1 group; combined intervention: built by cobalt dioxide and siRNA. M, mean; SD, standard deviation.