Viruses make obvious targets for RNAi intervention, given that they utilize specific cellular receptors and introduce foreign genes into host cells, researchers at the Wolfson Institute for Biomedical Research at University College London wrote in an article in Current Opinions in Infectious Diseases. Hepatitis C and HIV have been very aggressively pursued thus far, but a number of other viral-associated diseases, namely cancers, make promising targets for the gene silencing technology.