Figure 7: SEM image of spicules in primmorphs of L. baikalensis cultivated in ABW during three months. XMRA spectra obtained for freshwater spicules: (A) points spectra; (B) silica contents; (C) oxygen contents; (D) carbonate contents analyzed in the wall of the spicules. (E) general silica contents of spicules that were cultivated in ABW, as indicated on the spectra as percentages; (F) as an example, we provide spectrum 9, in which the silica content was 25,9%. Scale bars: 20 µm.