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. 2021 Sep 27;9(10):1333. doi: 10.3390/biomedicines9101333

Figure 3.

Figure 3

Principal component analysis of inflammatory cytokine expression patterns in the culture supernatant of ARPE-19 cells incubated in (A–G) dark culture or (H–N) light-irradiated culture. In dark culture, biplots of PCLs in (A) PC1 and PC2, (B) PC1 and PC3 and (C) PC2 and PC3 are shown. PCLs of (D) PC1, (E) PC2 and (F) PC3 are presented. (G) Eigenvalues, CR and CCR of PC1, PC2 and PC3 are described. In the light-irradiated culture, biplots of PCLs in (H) PC1 and PC2, (I) PC1 and PC3 and (J) PC2 and PC3 are shown. PCLs of (K) PC1, (L) PC2 and (M) PC3 are presented. (N) Eigenvalues, CR and CCR of PC1, PC2 and PC3 are described. CCR: cumulative contribution ratio, CR: contribution ratio, PC: principal component, PCL: principal component loading, PC1: first principal component, PC2: second principal component, PC3: third principal component.