![](/project/metdna-project/featured_hu677535a2012530859257d5dee261061e_203637_720x2500_fit_q75_h2_lanczos_3.webp)
MetDNA characterizes initial seed metabolites using a small tandem spectral library, and utilize their experimental MS2 spectra as surrogate spectra to annotate their reaction-paired neighbor metabolites which are subsequently served as the basis for recursive analysis.