SAMD00012335 IP A+ 12h 9606 Homo sapiens BromoUridine-labeled HeLa TO ARE cells were incubated for 12 hours in the presence of anctinomycinD, followed by isolation of tatal RNA. BrU-containg RNAs were immunopurified by anti-BrU antibody. Purified BrU-RNAs were analyzed.