Hepatocellular carcinoma in Richardson's ground squirrels (Spermophilus richardsonii): Evidence for association with hepatitis B–like virus infection
Bud C. Tennant, N. Mrosovsky, Kirsteen McLean, Paul J. Cote, Brent E. Korba, Ronald E. Engle, John L. Gerin, Janet Wright, Gail R. Michener, Elizabeth Uhl, John M. King – 1 June 1991 – During studies of seasonal obesity, a high frequency of hepatic neoplasms was observed in Richardson's ground squirrels. Of 12 Richardson's ground squirrels examined thoroughly, 7 had mild or moderate degrees of chronic portal hepatitis and 6 (50%) had hepatocellular carcinoma.