Tumors in the mouth (oral cancer) and throat (oropharyngeal cancer) include both benign (not cancer) and malignant types. Benign tumors, although they may grow and penetrate below the surface layer of tissue, do not spread by metastasis to other parts of the body.
Innate Immunity. The innate immune system is also known as the nonspecific immune system, which provides the first line of immunological defense against infection. The molecules and the receptors of the immune system provide a broad range of protection, so that it is also referred to as ânatural immunityâ.daptive Immunity. The adaptive or specific immune system mainly attacks the specific invaders. It consists of highly specialized cells called thymus-derived T lymphocyte cells and bone marrow-derived B lymphocyte cells.
Two types of white blood cells called lymphocytes are vital to the specific immune response. Lymphocytes are produced in the bone marrow, and mature into one of several subtypes. The two most common are T cells and B cells. An antigen is a foreign material that triggers a response from T and B cells.on-Specific (Innate) Immunity. The human immune system has two levels of immunity: specific and non-specific immunity. Through non-specific immunity, also called innate immunity, the human body protects itself against foreign material that is perceived to be harmful.