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The final structural models for ASSVd (A), PBCVd (B) and CVd-OS (C) obtained by SHAPE and folded by the RNAstructure software. The nucleotides in black denote those of low SHAPE reactivities (0–0.40). Those in orange are of intermediate reactivities (0.40–0.85) and those in red are highly reactive (>0.85). The CCR are delimited by the full lines.
