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. 2009 Nov 7;15(41):5211–5217. doi: 10.3748/wjg.15.5211

Table 4.

SP and SPR expression in colonic membrane of rats in different groups (n = 7) (mean ± SD)

Group	SP expression		SPR expression
Group	Optical density	Expressing area (μm²)	Optical density	Expressing area (μm²)
Normal group	14.21 ± 0.64	1772.77 ± 176.34	14.86 ± 0.48	362.65 ± 41.96
Model group	18.21 ± 1.07^a	3157.31 ± 304.95^a	16.36 ± 1.14^a	532.83 ± 105.60^a
EA group	16.29 ± 0.95^a ^c	2020.09 ± 116.31^a ^c	13.71 ± 0.70^a ^c	340.02 ± 29.61^c

^a

P < 0.05 vs normal group;

^c

P < 0.05 vs model group. SP: Substance P; SPR: Substance P receptor.