Table II.

Effect of herbal extracts on the protein expression of cytochrome P450 1A2 in rat liver.

Group	n	GE dose (g/kg)	Surface density (×10−2)	Number density (cell ×10−2/µm2)
Control	10	–	48.66±6.32a	0.69±0.089b
Combination of GE and MP	10	0.54	43.80±8.70b	0.59±0.093
High-dose GE	8	0.54	37.18±9.99c	0.53±0.1d
Medium-dose GE	8	0.43	38.34±10.14c	0.59±0.083
Low-dose GE	10	0.36	40.18±4.06c	0.66±0.21

^aP<0.01

^bP<0.05 vs. high-dose GE group

^cP<0.01

^dP<0.05 vs. control. Values are expressed as the mean ± standard deviation for groups. GE, Herba Gelsemii elegantis dichloromethane extract. A quantification assay is represented as the surface density and number density of positively stained cells. Surface density = area of positively stained cells/total statistical area; number density = number of positively stained cells/total statistical area.