RT Journal Article SR Electronic T1 Treponema pallidum within cells of a primary chancre from a human female. JF The British Journal of Venereal Diseases JO Br J Vener Dis FD BMJ Publishing Group Ltd SP 40 OP 44 DO 10.1136/sti.50.1.40 VO 50 IS 1 A1 J A Sykes A1 J N Miller A1 A J Kalan YR 1974 UL http://sti.bmj.com/content/50/1/40.abstract AB