RT Journal Article SR Electronic T1 Effect of penicillin on endocarditis strains of viridans streptococci. JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 1114 OP 1115 DO 10.1136/jcp.42.10.1114 VO 42 IS 10 A1 Marks, J A1 Paull, A YR 1989 UL http://jcp.bmj.com/content/42/10/1114.abstract AB