[Importance of direct study of Treponema in primary lesions].
D005260:Female; D005455:Fluorescent Antibody Technique; D006801:Humans; D008297:Male; D008722:Methods; D013587:Syphilis / Q000175:diagnosis / Q000276:immunology / Q000382:microbiology*; D014208:Treponema / Q000302:isolation & purification*
Importancia de la investigación directa de treponemas en lesiones primarias.