Indication: This product is suitable for: malignant tumor patients with low immune function caused by radiotherapy and chemotherapy. (1) For patients with chronic hepatitis B over 18 years old. (2) Various primary or secondary T cell deficiency diseases (such as congenital immunodeficiency in children). (3) Certain autoimmune diseases (such as rheumatoid arthritis, systemic lupus erythematosus, etc.). (Lupus erythematosus is an autoimmune disease with a slow onset and insidious occurrence. The clinical manifestations are diverse and varied. It is an autoimmune disease involving many systems and organs. Due to the dysfunction of cellular and humoral immune function, a variety of autoantibodies are produced. It can affect the skin, serous membranes, joints, kidneys and central nervous system, etc., and is characterized by autoimmunity. There are multiple autoantibodies in the patient's body, which not only affect humoral immunity, but also cellular immunity, and the complement system also changes. The pathogenesis is mainly due to the formation of immune complexes. The exact cause is unknown. The condition is a process of repeated attacks and remissions.) (4) Various diseases with low cellular immune function. (5) Adjuvant treatment of tumors.