RT Journal Article SR Electronic T1 Tolerance to penicillin in streptococci of viridans group. JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 1005 OP 1006 DO 10.1136/jcp.42.9.1005 VO 42 IS 9 YR 1989 UL http://jcp.bmj.com/content/42/9/1005.abstract AB