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Figure 3 Plasma homocysteine levels and potential atherogenic peptides and proteins for the three patient groups and CAV subgroups. Open diamond = normal controls; closed square = control-ischemic; open square = control-dilated; open circle = non-CAV; closed circle = severe CAV; dotted line = normal value for laboratory; X = mild CAV; < = median. CAV = cardiac allograft vasculopathy; CHF = congestive heart failure.