1. Hepatitis E in the United States: A Case of “Hog Fever”?
Piet C. de Groen, M.D. 
Mayo Clinic Proceedings 
Volume 72, Issue 12, Pages (December 1997)
DOI: /S (11)
Copyright © 1997 Mayo Foundation for Medical Education and Research Terms and Conditions

2. Fig. 1
Schematic representation of the hepatitis E virus. 5′ = 5 prime end; 3′ = poly A tail and 3 prime end; ORF = open reading frame; 5′ ORF-1 and 3′ ORF-1I ORF-2 ORF-3 = parts of strain from United States sequenced by researchers at Abbott Laboratories.
Mayo Clinic Proceedings  , DOI: ( /S (11) )
Copyright © 1997 Mayo Foundation for Medical Education and Research Terms and Conditions