The SMARTer Mouse TCR a/b Profiling Kit provides a powerful new solution for those seeking to perform T-cell receptor (TCR) repertoire analysis using NGS. The kit employs a 5"-RACE-based approach to capture complete V(D)J variable regions of TCR transcripts, starting from as little as 10 ng to 500 ng of total RNA obtained from mouse spleen, thymus, or PBMCs, or from 1,000 to 10,000 purified T cells. As the name suggests, the kit can be used to generate data for both TCR-alpha and TCR-beta chain diversity, either in the same experiment or separately.In contrast with TCR profiling methods that involve PCR multiplexing, each round of library amplification utilizes a single primer pair for each TCR subunit, thereby increasing efficiency and reducing the potential for primer-dimer formation. Multiplex PCR-based approaches are known to promote primer-associated, sequence-specific bias; this bias does not exist with our RACE-based approach, as all variable regions are primed from the same constant-region sequence. Using our ~4-hr protocol, libraries produced with the kit are indexed and ready for sequencing on Illumina platforms.This kit leverages our proven SMART (SwitchingMechanismat 5" End ofRNATemplate) technology along with LNA technology to amplify TCR mRNA sequences in an unbiased manner with remarkable sensitivity.