About CD28
The protein encoded by this gene is essential for T-cell proliferation and survival, cytokine production, and T-helper type-2 development. Several alternatively spliced transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Jul 2011]

About StarBright Blue 765
StarBright Blue 765 (SBB765) Dye is a bright, 488 nm laser excitable dye with a unique narrow excitation and emission profile and is suitable for conventional and full spectrum flow cytometry. It is brighter than PE-Cy7 when excited by the 488 nm laser. As it is not a traditional tandem dye, SBB765 does not have issues around tandem breakdown and changes to staining over time and exhibits reduced excitation by the 561 nm laser compared to PE tandem dyes. SBB765 provides more choice and flexibility when building multicolor panels incorporating the 488 nm laser.