Certain features of will be down for maintenance the evening of Friday August 18th starting at 8:00 pm CDT until Saturday August 19th at 12:01 pm CDT.   Please note that you still have telephone and email access to our local offices. We apologize for any inconvenience.

Fluorescent Labels

The sensitivity and safety (as compared to radioactive methods) of fluorescence has led to an increasing use for the specific labeling of nucleic acids, proteins and other biomolecules. Well-known labels, fluorescein and rhodamine derivatives, are widely used, but suffer from some limitations. A range of improved fluorescent labels has been developed recently. These labels cover the entire range of visible light, reaching from 400 to 820 nm.