Fig 2. Hemoglobin (Hb) concentrations associated with HDL were positively correlated with heme, reactive oxygen species (ROS) level and IL-6/IL-10.

Relative Hb levels in the plasma (A1–A4 and C1–C4). Relative Hb [ApoA-1] = Hb associated with ApoA-1 particles from HDL (B1–B4 and D1–D4). Fig A1-A4 and B1-B4 present the data from the SCD group (n = 32) and Fig C1-C4 and D1-D4 are those from healthy donors (n = 28). Linear regression was performed individually and and p values and R² values are shown in the Figs. (NS = not significant).