Table 1. Differentially expressed peaks between PBC and control bile ducts.

m/z	PBC (n=14)		Controls (n=9)		P value
	Mean	CV	Mean	CV
2755	0.367	0.608	0.08	1.233	3.5×10−4
6102a	0.121	0.59	0.627	1.3	1.2×10−3
6318	0.129	0.368	0.267	0.538	2.8×10−4
8412	0.118	0.552	0.273	0.25	2.3×10−4
8963	0.064	0.412	0.122	0.52	2.5×10−3
9958	0.434	0.459	0.988	0.519	1.7×10−3
10467	0.063	0.72	0.13	0.489	2.1×10−3
12349b	0.126	0.608	0.254	0.413	3.0×10−3

Abbreviations: CV, covariance; PBC, primary biliary cirrhosis.

^aFeature m/z 6102 is a result of merging of two peaks: m/z 6085 and m/z 6116.

^bMay represent macrophage inhibitory factor.