Patent=US4705687
Lau C.Y.
Treatment of autoimmune diseases such as rheumatoid arthritis with suppressor factor.
Patent number US4705687, 10-Nov-1987
Patent=US4728614
Lau C.Y.
Mutant human T cell line producing immunosuppressive factor and method for obtaining such mutants.
Patent number US4728614, 01-Mar-1988