About CD40
This gene is a member of the TNF-receptor superfamily. The encoded protein is a receptor on antigen-presenting cells of the immune system and is essential for mediating a broad variety of immune and inflammatory responses including T cell-dependent immunoglobulin class switching, memory B cell development, and germinal center formation. AT-hook transcription factor AKNA is reported to coordinately regulate the expression of this receptor and its ligand, which may be important for homotypic cell interactions. Adaptor protein TNFR2 interacts with this receptor and serves as a mediator of the signal transduction. The interaction of this receptor and its ligand is found to be necessary for amyloid-beta-induced microglial activation, and thus is thought to be an early event in Alzheimer disease pathogenesis. Mutations affecting this gene are the cause of autosomal recessive hyper-IgM immunodeficiency type 3 (HIGM3). Multiple alternatively spliced transcript variants of this gene encoding distinct isoforms have been reported. [provided by RefSeq, Nov 2014]

About NovaFluor Yellow 690
The NovaFluor family of fluorescent polymers from Thermo Fisher Scientific are a novel reagent for traditional and spectral flow cytometry. These fluorophores are comprised of a DNA backbone polymer integrated with fluorophore substituted nucleosides to create a potent donor molecule. Tandem fluophores with long Stokes' Shift enable brighter, spectrally discrete, tunable fluorescent polymers as an alternative to traditional simple organic structures, protein-based fluorophores as well as the Horizon Brilliant™ family of fluorescent polymers from BD. NovaFluor Yellow 690 is designed to be discreetly excited by the 561nm laser and has an excitation peak at 552 nm and an emission peak at 690 nm.