Figure 1From: Methodological constraints in interpreting serum paraoxonase-1 activity measurements: an example from a study in HIV-infected patientsRelationships between serum PON1 esterase and lactonase activities and oxidised LDL and MCP-1 concentrations in the control group (open circles) and HIV-infected patients (closed circles). The lines within the graphs represent the linear or curvilinear regression lines of the distributions of measured values in the control group (dashed lines) and the HIV-infected patients (continuous lines). NS = not significant.Back to article page