This product is prepared by labeling high quality goat anti-mouse IgG (H+L) with CF405S dye. CF dyes are Biotiums line of next-generation fluorescent dyes with advantages in brightness, photostability, and conjugate specificity compared to other fluorescent dyes. Blue fluorescent CF405S dye has excitation/emission at 404/431 nm. Note: Conjugates of blue fluorescent dyes like CF350, CF405S, and CF405M are not recommended for detecting low abundance targets, because blue dyes have lower fluorescence and can give higher non-specific background than other dye colors.