Metabolic Profiling of Serum for Osteoarthritis Biomarkers

Figure 1

Base peak ion chromatogram. (a) (ESI+) BPC-control. (b) (ESI+) BPC-case. (c) (ESI-) BPC-control. (d) (ESI-) BPC-case.

(a)

(b)

(c)

(d)