Figure 5. Loading spectra of principal component analysis (PCA).
Loadings exhibit the spectral differences of viable Saos-2 cells compared to (a) early apoptotic, (b) late apoptotic and (c) necrotic Saos-2 cells. Loadings of PCA depict specific peak shifts due to (d) early apoptosis, (e) late apoptosis and (f) necrosis in SW-1353 cells.