Non-doctor health professionals that may be a part of the orthopedics team include: 1  Athletic trainers. 2  Counselors. 3  Nurse practitioners. 4  Physical therapists. 5  Physician assistants. 6  Psychologists. 7  Social workers. 8  Vocational workers.
The main response of the immune system to tumors is to destroy the abnormal cells using killer T cells, sometimes with the assistance of helper T cells. Tumor antigens are presented on MHC class I molecules in a similar way to viral antigens. This allows killer T cells to recognize the tumor cell as abnormal.
T-cells contain proteins called T-cell receptors that populate the T-cell membrane. They are capable of recognizing various types of antigens (substances that provoke an immune response). T-lymphocytes are derived from the thymus and travel to the spleen via blood vessels.B-lymphocytes or B-cells originate from bone marrow stem cells.hey are capable of recognizing various types of antigens (substances that provoke an immune response). T-lymphocytes are derived from the thymus and travel to the spleen via blood vessels. B-lymphocytes or B-cells originate from bone marrow stem cells.