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.
â¦second type of response, called cell-mediated immunity, does not yield antibodies but instead generates T lymphocytes that are reactive against specific antigens. This defense is exhibited against bacteria and viruses that have been taken up by the hostâs cell as well as against fungi, transplanted tissue, and cancer cells.