title: Percoll-purified Treponema pallidum, an improved fluorescent treponemal antibody-absorbed antigen.
abstract: Percoll-purified Treponema pallidum was evaluated as a fluorescent treponemal antibody-absorbed antigen. Borderline and false-positive reactions were essentially eliminated, resulting in sensitivity and specificity of 100 and 95.5%, respectively. The lack of background debris improved the ease and speed of reading the test.
mesh_terms: D000818:Animals; D002499:Centrifugation, Density Gradient; D005455:Fluorescent Antibody Technique; D006801:Humans; D011205:Povidone; D011817:Rabbits; D012698:Serologic Tests; D012822:Silicon Dioxide; D013587:Syphilis / Q000175:diagnosis*; D014208:Treponema / Q000276:immunology / Q000302:isolation & purification*
chemical_list: C016039:Percoll; D012822:Silicon Dioxide; D011205:Povidone