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Scatter plot based on the first two components of the PCA performed on RSCU and rho values calculated on mammal and avian circoviruses. For interpretation easiness, PCV-3 and Chiroptera circoviruses have been highlighted with different colours. The PCA loading are represented as arrows. The 95% confidence ellipses around clusters are also reported. Both Rep (top) and Cap (bottom) genes have been analysed.
