About CD40L
The protein encoded by this gene is expressed on the surface of T cells. It regulates B cell function by engaging CD40 on the B cell surface. A defect in this gene results in an inability to undergo immunoglobulin class switch and is associated with hyper-IgM syndrome. [provided by RefSeq, Jul 2008]

About PE-Dazzle 594
PE-Dazzle® 594 (RPE-Dazzle 594) from Biolegend is a red-emitting tandem fluorophore that combines pycoerythrin (PE) and Dazzle 594. The donor molecule, PE can be excited by the 488-nm blue, 532-nm green, or 561-nm yellow-green laser and and transfers energy to the acceptor molecule, Dazzle 594, which emitts light that can be captured with a 610/20 nm bandpass filter. PE-Dazzle 594 has an excitation peak at 565 nm and an emission peak at 610 nm, and is suitable alternative to PE-Texas Red, PE-eF610, PE-Alexa Fluor™ 610 or PE-CF®594.