RT Journal Article SR Electronic T1 The nature of the scrapie agent JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 154 OP 155 DO 10.1136/jcp.25.Suppl_6.154 VO 25 IS Suppl 6 A1 Alper, Tikvah YR 1972 UL http://jcp.bmj.com/content/25/Suppl_6/154.abstract AB