Author Affiliations +
George Migaki,1 RICHARD A. HECKMANN,2 THOMAS F. ALBERT3
1Registry of Comparative Pathology, Armed Forces Institute of Pathology, Washington, D.C. 20306, USA
2Department of Zoology, Brigham Young University, Provo, Utah 84602, USA
3Department of Veterinary Science, University of Maryland, College Park, Maryland 20742, USA