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Figure 2 | Arthritis Research & Therapy

Figure 2

From: A targeted lipidomics approach to the study of eicosanoid release in synovial joints

Figure 2

Extracted ion chromatogram of mass transition 351→271 in an 8-hour synovitis sample. The separate peaks show excellent chromatographic resolution of geometrical isomers prostaglandin E2 (PGE2) and PGD2. The low-abundant peak at 351→175 (inset) coincides with the first peak of the main trace, confirming the identity of this analyte as PGE2 rather than PGD2. Note the difference in scales of the left y-axis (showing ion count for PGE2) and the right y-axis (PGD2). cps, counts per second; m/z, mass/charge.

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