Article by Qui-Lim Choo et al in Science Vol 244 titled Isolation of a cDNA Clone Derived from a Blood-Borne Non-A Non-B Viral Hepatitis Genome. Document also includes first page of another article by G. Kuo et al in the same journal titled An Assay for Circulating Antibodies to a Major Etiologic Virus of Human Non-A Non-B Hepatitis.