CF® dyes are superior to Alexa Fluor® dyes and Cy® dyes for protein labeling by having combined advantages in brightness, photostability, specificity, and novel features ideal for in vivo imaging. We also offer Annexin V conjugated to CF® dyes, biotin, R-PE and other labels in solution with azide as a preservative for end-point staining assays. See Related Products or visit www.biotium.com for more information about our apoptosis probes, including NucView® Caspase-3 Substrates for real-time monitoring of caspase activity in intact cells in real time.