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Periodical. Jolly, D. J., Hiroto Okayama, Paul Berg, A. C. Esty, D. Filpula, P. Bohlen, G. G. Johnson, J. E. Shively, T. Hunkapillar, and T. Friedmann. "Isolation and Characterization of a Full-Length Expressible cDNA for Human Hypoxanthine Phosphoribosyltransferase." Proceedings of the National Academy of Sciences of the United States of America 80, 2 (January 1983): 477-481. Article. 5 Images.. Proceedings of the National Academy of Sciences of the United States of America