APOA1 and atherosclerosis: Pérez-Medina and coworkers developed macrophage-targeting rHDLs radiolabeled with 89Zr on ApoA-I (89Zr-A1-HDL) or phospholipids (89Zr-PL-HDL) for imaging atherosclerosis in murine, rabbit, and porcine models (Pérez-Medina et al., 2016).