Figure 5From: The nature and fate of natural resins in the geosphere. Part X.† Structural characteristics of the macromolecular constituents of modern Dammar resin and Class II ambersDEPT spectra for modern fossil Dammar polymer. (a) DEPT 45, (b) DEPT 90, (c) DEPT 135 (See also caption for Fig. 4 for additional description) (* = CHC13). See Additional file 4 for interactive NMR spectra for (a), (b) and (c).Back to article page