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Low-molecular-mass components of O. monticola venom and venom sac extract as analyzed by LC-ESI-MS. (A) Selected ion chromatograms of total ion chromatogram, (B) leucine/isoleucine, (C) phenylalanine, (D) tryptophan, (E) histamine, and (F) tyramine. The observed and calculated m/z values are shown with the corresponding structural formulae.
