[Lymphocyte migration inhibition in rabbit experimental syphilis (author's transl)]

During rabbit experimental syphilis a suspension of Treponema pallidum (TP) was used as antigen. The evolution of anti TP antibodies was followed up to the fifteenth month, the antibody titer was maximum at month seven. A stimulation of leukocytes migration test was observed up to the sixth month then a significant inhibition appeared (chi square test) which persists after the ninth month. Hence the possibility was discussed that some form of cellular immunity appears secondary while immune response was mostly of humoral type at the beginning of the disease.