- Polymerase chain reaction to detect hepatitis B virus DNA and RNA sequences in primary liver cancers from patients negative for hepatitis B surface antigen. Paterlini, P., Gerken, G., Nakajima, E., Terre, S., D'Errico, A., Grigioni, W., Nalpas, B., Franco, D., Wands, J., Kew, M. N. Engl. J. Med. (1990)