CXCL12 and age-related macular degeneration: Our previous research (Hagbi-Levi et al., 2017) indicated that M2a hMdɸs from healthy individual were associated with increased expression and secretion of pro-inflammatory proteins such as IL-6, CCL2, SDF-1, VEGF, and PDGF-α, compared with M2a hMdɸs from AMD patients.