How to prevent pregnancy?

Women with negative blocking antibodies are prone to miscarriage after pregnancy. Blocking antibodies play a protective role in the embryonic tissue after pregnancy, preventing the immune system of pregnant women from attacking the embryo. If the blocking antibody of pregnant women is negative, the immune system will regard the embryo as an abnormal antigen after pregnancy and produce an immune response, resulting in miscarriage. In this case, the husband's blood may be drawn to isolate his lymphocytes, and the lymphocytes may be injected into the pregnant woman as antigens to induce the production of blocking antibodies. In addition, appropriate immunosuppressants may be prescribed.