Patient: How is infertility treated? Doctor: Did you experience embryonic arrest? Or is it recurrent spontaneous miscarriage? If the pregnancy is negative for closed antibodies, it can cause rejection of the fetus by the mother’s organism, which is a restriction of embryonic or fetal development and causes the above-mentioned outcome. It is recommended that 3-6 times of active immunization of the husband’s lymphocytes should be performed first to induce the production of closed antibodies and to exclude other causes affecting the development of the embryo before trying to conceive.