Molecular masses (m/z) oligopeptides and unknown components in the range of m/z 500 to 1,100 Da detected in colonies of M. aeruginosa, M. ichthyoblabe, and M. wesenbergii. Symbols for substance classes: open diamonds, aeruginosin; open circles, microginin; open triangles, anabaenopeptin; open squares, microcystin; solid diamonds, cyanopeptolin; small solid rectangles, unknown components. For structure assignments of compounds, see Table 2.