Figure 2. Proposed general secondary structure model for the ITS1–5.8S rDNA–ITS2 in A revised taxonomy and phylogeny of opalinids (Stramenopiles: Opalinata) inferred from the analysis of complete nuclear ribosomal DNA genes

Figure 2. Proposed general secondary structure model for the ITS1–5.8S rDNA–ITS2–LSU rDNA of Opalinida* The expansion segments (ES#L) containing helices (in red) where there are important differences between genera are annotated. Colour code: yellow* ITS1 region; blue* 5.8S rRNA; magenta* ITS2 region; grey* LSU rRNA.