Hederstedt B
Acta Pathol Microbiol Scand C. 1976 Jun;84(3):250-4. doi: 10.1111/j.1699-0463.1976.tb00027.x.
The immobilizing IgM antibody of normal serum and the IgG antibody of syphilis serum reacted with different antigens of T. pallidum. The normal serum antibody to T. pallidum cross-reacted with antigens of various mammalian tissues.