RT Journal Article SR Electronic T1 Basic molecular genetics for epidemiologists JF Journal of Epidemiology and Community Health JO J Epidemiol Community Health FD BMJ Publishing Group Ltd SP 398 OP 400 DO 10.1136/jech.57.6.398 VO 57 IS 6 A1 F Calafell A1 N Malats YR 2003 UL http://jech.bmj.com/content/57/6/398.abstract AB This is the first of a series of three glossaries on molecular genetics. This article focuses on basic molecular terms.