About CD8b
The CD8 antigen is a cell surface glycoprotein found on most cytotoxic T lymphocytes that mediates efficient cell-cell interactions within the immune system. The CD8 antigen, acting as a coreceptor, and the T-cell receptor on the T lymphocyte recognize antigens displayed by an antigen presenting cell (APC) in the context of class I MHC molecules. The functional coreceptor is either a homodimer composed of two alpha chains, or a heterodimer composed of one alpha and one beta chain. Both alpha and beta chains share significant homology to immunoglobulin variable light chains. This gene encodes the CD8 beta chain isoforms. Multiple alternatively spliced transcript variants encoding distinct membrane associated or secreted isoforms have been described. A pseudogene, also located on chromosome 2, has been identified. [provided by RefSeq, May 2010]

About Brilliant Violet 480
Brilliant™ Violet 480 (BV480) is a green-emitting non-tandem polymer fluorophore that can be excited by the 405 nm Violet laser and collected using a 525/40 bandpass filter. BV480 has an excitation peak at 436 nm and an emission peak at 478 nm, and provides an optimized alternative to BV510. Other dyes that are similar include StarBright Violet 475 (Bio-Rad) While BV480 can be detected on the same filter as BV510, its emmision profile reduces spillover into the BV605, BV650, and BV711 channels. Additionally BV480's excitation profile will reduce cross-laser excitation with the UV laser, resulting in less spillover into UV channels than BV510. These advantages make BV480 an optimal choice for flow cytometry panels using multiple reagents on Violet and/or UV lasers. This dye is part of the Brilliant™ Violet dye line. BV510 and BV480 are the only dyes in the Brilliant™ Violet dye family that are not tandem fluorophores based off the BV421 polymer core, but they have nearly the same maximum excitation.