Clinical study revealed that immunological sterility mainly manifests itself as deficiency of Yin and Yang of the kidney or with blood stasis at the same time. Zhuyun No. 1 and No. 2 Pills for nourishing the kidney and warming up the kidney to activate blood circulation yielded a rate of 93. 5% for eliminating AsAb with an average rate of 29. 0% for pregnancy. There were no side effects. Animal models revealed that Zhuyun No. 1 and No. 2 inhibited the formation of antibodies. Studies on natural abortion demonstrated that an abortive couple had an increased compatibility of HLA while the CD4 of abortive women was markedly lowered with low blocking effect

deficiency of both spleen and kidney as its manifestations. After treated with Zhuyun No. 3 Pill for strengthening the spleen and tonifying the kidney

the successful rate for pregnancy was 95. 2% and the blocking effect can be thus increased.