Single B cell cDNA was generated with random hexamers using SSIII. The antibody heavy- and light-chain variable regions were PCR amplified using AmpliTaq360 master mix (Applied Biosystems). PCR products were purified (Qiagen, Valencia, CA) and sequenced by Genewiz. Gene rearrangements, clonal relatedness, unmutated common ancestors, and intermediate ancestor inferences were made using Cloanalyst (13 (link)). The DH677 clonal lineage tree was generated using FigTree.
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