(b).

Feature	Sigmoid colon
	Control	PSC	PSC + UC	PSC versus control	PSC + UC versus control	PSC versus PSC + UC
Architectural change	0.1 ± 0.1	0.2 ± 0.2	0.9 ± 0.3	NS	p = 0.0015	p = 0.01
Chronic inflammatory infiltrate	0.4 ± 0.1	0.4 ± 0.2	1.3 ± 0.1	NS	p < 0.0001	p = 0.0003
Lamina propria neutrophils and eosinophils	0.0	0.1 ± 0.1	0.9 ± 0.2	NS	p < 0.0001	p = 0.0001
Neutrophils in epithelium	0.0	0.0	0.1 ± 0.1	NS	NS	NS
Crypt destruction	0.0	0.0	0.5 ± 0.4	NS	NS (p = 0.054)	NS
Erosion or ulceration	0.0	0.0	0.4 ± 0.3	NS	NS	NS
Total	0.5 ± 0.2	0.6 ± 0.3	2.9 ± 0.4	NS	p < 0.0001	p < 0.0001