RT Journal Article SR Electronic T1 A modified toxigenicity test for Corynebacterium diphtheriae JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 88 OP 88 DO 10.1136/jcp.15.1.88 VO 15 IS 1 A1 Hayden-Smith, S. A1 Schrire, L. YR 1962 UL http://jcp.bmj.com/content/15/1/88.abstract AB