Aminoallyl NTPs are used for indirect DNA labeling in PCR, nick translation, primer extensions and cDNA synthesis.[13] These labeled NTPs are helpful because of their application in molecular biology labs where they do not have the capacity to handle radioactive material. For example, 5-(3-Aminoallyl)-Uridine(AA-UTPs) are more effective for high density labeling of DNA than pre-labeling the DNA. After the enzymatic addition of the NTPs, amine reactant fluorescent dyes can be added for detection of the DNA molecule.[7] When incorporated into DNA or RNA molecules by DNA/RNA polymerase, 5-(3-aminoallyl)-UTP provide a reactive group for the addition of other chemical groups.