Table 2.
Peak assignments of Raman spectra of breast tissue
| NB | AH | Peak assignment |
|---|---|---|
| 720 | 720 | C–C twisting mode of tyrosine |
| 781 | 784 | C–N (membrane phospholipid head)/adenine |
| 830 | 828 | U,C,T ring breathing, DNA |
| 854 | 854 | Out of plane ring breathing tyrosine/O-P-O stretch DNA |
| 880 | 880 | DNA |
| 931 | 928 | C–C stretch of proline ring/glucose/lactic acid |
| 935 | C–C stretch of proline ring and valine and protein backbone (a-helix conformation)/glycogen | |
| 1001 | 1001 | symmetric ring breathing mode of phenylalanine |
| 1031 | 1030 | C–H in plane bending mode of phenylalanine |
| 1088 | 1086 | C–C stretch, O–P–O stretch (nucleic acids) |
| 1118 | 1120 | V (C–C) of lipids from trans-segments |
| 1156 | 1156 | β-carotene |
| 1210 | 1211 | Tryptophan and phenylalanine V mode |
| 1260 | 1261 | (Amide III) C–N stretching mode of protein |
| 1302 | 1300 | CH2 deformation (lipid)/adenine, cytosine |
| 1440 | 1440 | CH2 deformation (lipid) |
| 1527 | 1527 | C=C stretching mode of β-carotene |
| 1573 | 1575 | Tryptophan, nucleic acid s(guanine, adenine) TRP protein |
| 1610 | (Amide I, α-helix),V (C=O) of proteins collagen, elastin | |
| 1660 | 1660 | C=O stretching mode of phospholipids |
| 1740 | 1742 | Tryptophan and phenylalanine V mode |
AH, breast atypical hyperplasia; NB, normal breast tissues.