Figure 4: Immunolabeling for CXCL-11 with Vector Blue (blue) and counterstained with neutral red (pink). Representative sections from younger eyes (≥ 57 yr, n = 16) are shown. Samples were analyzed for the presence of drusen( ≥ 4 μm, n = 9). Within the younger age-group, eyes with drusen (B) have greater accumulation of CXCL-11 throughout the retina and choroid. Scale bar 20μm. (C) Within tissue of younger eyes (≤ 57 yr, n = 16),those with any observable drusen (≥ 4 μm, n = 9) were found to stain stronger (p ≤ 0.05, black asterisk) for chemokine, CXCL-11 from the retina through to the choroid.