The alignment of two heavy-chain sequences has been revised: IGHV-NTLL in CAST/EiJ IGH and IGHV-MJAE in LEWES/EiJ IGH. Some truncated sequences in CAST/EiJ IGL and MSM/MsJ IGL have been replaced with full-length versions. Please refer to the version history of these four sets for further details. Thanks to Hervé Pagès for reporting these anomalies.