RT Journal Article SR Electronic T1 The polymerase chain reaction. JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 673 OP 676 DO 10.1136/jcp.42.7.673 VO 42 IS 7 A1 Peake, I YR 1989 UL http://jcp.bmj.com/content/42/7/673.abstract AB