RT Journal Article SR Electronic T1 Practical Histochemistry JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 275 OP 275 DO 10.1136/jcp.45.3.275-c VO 45 IS 3 A1 Lake, BD YR 1992 UL http://jcp.bmj.com/content/45/3/275.3.abstract AB