Table 3. Renal tissue TGF-β1, BMP-7 and Smad6 protein expression after treatment (ratio to β-actin).

Group	n	TGF-β	BMP-7	Smad6
S	10	1.21±0.15	2.33±0.32	1.92±0.21
CRF	10	2.53±0.19*	0.91±0.14*	0.94±0.13*
CRF+SAA	10	1.66±0.21*#	2.11±0.22#	1.72±0.16*#

^* P < 0.05 vs. group S; ^# P < 0.05 vs. group CRF. TGF-β1, transforming growth factor-β1; BMP-7, bone morphogenetic protein 7.