Fig. 5

Time traces of relative Raman peak intensities during normal cell growth. Individual traces are labeled a throught. Peak traces were grouped based on similar profiles. Grouping of the Raman frequencies also coincided with the molecular species assigned to each of the peaks. The Raman frequencies in group A are specific to nucleic acids, those in group B are associated with protein, and those in group C are associated with lipids. a 668 cm⁻¹; b 1575 cm⁻¹; c 1100 cm⁻¹; d 1484/1482 cm⁻¹; e 783/786 cm⁻¹; f 813 cm⁻¹; g 934 cm⁻¹; h 852 cm⁻¹; i 963 cm⁻¹; j 1032 cm⁻¹; k 1550 cm⁻¹; l 1003 cm⁻¹; m 1437 cm⁻¹; n 1443 cm⁻¹