Abstract
Browning' s Wassermann reaction and complement binding reaction of leprous and syphilitic serum with antigen of many ratios of cardiolipin (NISSIN), kephalin and choles-terin gave us the following results : the antigen of cardiolipin (1), kephalin (30), and cholesterin (15), produced positive reaction with 57% of leprous serum (lepra tuberosa 75%, L. nervosa 25%, and L. maculosa 67%), but with only 10% with syphlitic serum.
