title: Letter: Early-warning test for syphilis.
mesh_terms: D000907:Antibodies, Bacterial / Q000032:analysis; D006801:Humans; D007074:Immunoglobulin G / Q000032:analysis; D007075:Immunoglobulin M / Q000032:analysis*; D008722:Methods; D013587:Syphilis / Q000175:diagnosis* / Q000276:immunology; D013588:Syphilis Serodiagnosis; D013997:Time Factors; D014209:Treponema Immobilization Test; D014210:Treponema pallidum / Q000276:immunology*
chemical_list: D000907:Antibodies, Bacterial; D007074:Immunoglobulin G; D007075:Immunoglobulin M