[Immunoelectrophoretic study of serum from patients with untreated recently adquired syphilis]

An immunoelectrophoretic study of serum from patients with non-treated recently acquired syphilis (RAS) is made for the first time in our country. Increases in IgM and IgG fractions were detected; the increase of the former exceeded to the latter in patients with cutaneous symptomatic recently acquired syphilis (CSRAS) in comparison with those having mucous cutaneous symptomatic recently acquired syphilis (MCSRAS). IgG were increased in 100% of patients with this latter disease, although both fractions were increased in patients with latent recently acquired syphilis (LRAS).