igg and igm antibody specificities for antigens of treponema pallidum nichols strain were determined by using sodium dodecyl sulfate-polyacrylamide gel electrophoresis and the western blot technique in sera from patients with untreated syphilis , normal persons , persons with biologic false-positive tests for syphilis , and sexual contacts of persons with infectious syphilis .
C0009450
infectious
C0039128
syphilis