BD Horizon™ BB515 Goat Anti-Mouse Ig is intended to be a second-step reagent for immunofluorescent staining of cells pre-stained with Mouse Ig primary antibodies. It is reactive with the heavy and light chains of mouse primary antibodies having the IgG1, IgG2a, IgG2b, IgG3, IgM, and IgA isotypes. Minimal background staining of human and rat cells occurs in the absence of a primary mouse antibody. In addition, the BD Horizon BB515 Goat Anti-Mouse Ig stains mouse B lymphocytes with little non-specific staining of other cells. Therefore, it is useful as a primary immunofluorescent reagent for staining mouse B cells and antibody-producing cells and as a secondary reagent for staining human and rat cells pre-stained with mouse Ig primary antibodies.
The antibody was conjugated to BD Horizon BB515 which is part of the BD Horizon Brilliant™ Blue family of dyes. With an Ex Max near 490 nm and an Em Max near 515 nm, BD Horizon BB515 can be excited by the blue laser (488 nm) laser and detected with a 530/30 nm filter. This dye has been exclusively developed by BD Biosciences and is up to seven times brighter than FITC with less spillover into the PE channel. Due to similar excitation and emission properties, BB515, FITC, and Alexa Fluor® 488 cannot be used simultaneously. It is not recommended to use BB515 in cocktails that include Streptavidin conjugates as it may cause high background.