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Localization of Secondary Metabolites in Marine Invertebrates: Contribution of MALDI MSI for the Study of Saponins in Cuvierian Tubules of H. forskali

Figure 4

Molecular structures of saponins from the Cuvierian tubules of Holothuria forskali.

Isomeric congeners are presented in columns (a) and (b). Structures and corresponding names are from Van Dyck et al. [17].

Figure 4

doi: https://doi.org/10.1371/journal.pone.0013923.g004