Supplementary Video S1

<p>Pessia, A., Grad, Y., Cobey, S., Puranen, J. S. & Corander, J. K-Pax2: Bayesian identification of cluster-defining amino acid positions in large sequence datasets.</p> <p>Supplementary Video S1. Core clusters amino acid changes, mapped to the 3D structure of the hemagglutinin.</p>