Figure 4.

The score plots (a,b) and loadings (c) of PCA analysis representative for B cells and three groups of leukemic cells, in the spectral range of 3030–2750 cm⁻¹ and 1800–500 cm⁻¹; laser excitation of λ = 532 nm. Color-coded asterisks mark the most pronounced Raman features in the loadings (*).