IL1B and age-related macular degeneration: Untreated AMD cell lysates also showed 224.5 % higher IL-1β protein levels compared to untreated normal cell lysates: P = 0.0286; NL UN CL = 1 ± 0.2377 a.u.; AMD UN CL = 3.245 ± 0.4314 a.u. (Figure 4B).