Figure 3.

Box diagrams of integral intensities for the selected bands showing biochemical changes in parenchyma, atelectasis, and fibrous/muscular tissue in the metastasis progression in the lungs. Integration regions: total proteins [(1707–1608 cm⁻¹) + (1589–1485 cm⁻¹)], secondary structure of proteins [(1589–1485 cm⁻¹)/(1707–1608 cm⁻¹)], fibrillar proteins (1286–1193 cm⁻¹), hydroxyproline residues (1187–1140 cm⁻¹), carbohydrate moieties (1137–1015 cm⁻¹). The bands’ assignment is given in Table 2.