This product is prepared by labeling highly cross-adsorbed donkey anti-rabbit IgG (H+L) with CF®535ST dye. CF® dyes are Biotium's line of next-generation fluorescent dyes with advantages in brightness, photostability, and conjugate specificity compared to other fluorescent dyes. Orange fluorescent CF®535ST dye has excitation/emission at 535/568 nm and is designed specifically for STORM super-resolution imaging. To minimize cross-reactivity, the antibody has been adsorbed against bovine, chicken, goat, guinea pig, Syrian hamster, horse, human, mouse, rat, and sheep serum. Single label antibodies have an average of one dye molecule per antibody molecule, which is reported to be optimal for super-resolution imaging by STORM.