<p>(<b>A</b>) Heavy (top) and light (bottom) phylogenetic trees with pairing of inferred intermediates indicated by dashed lines. Intermediate pairing based on tree structure and considerations from polyreactivity (see text and [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0157409#pone.0157409.ref018" target="_blank">18</a>]). (<b>B</b>) Heavy chain UCA, intermediates and mature sequences. (<b>C</b>) Light chain UCA, intermediates and mature sequences.</p
