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Immunity System

Immunity Or Specific Resistance – Cell-Mediated Immunity And Antibody-Mediated Immunity

In contrast to nonspecific resistance, immunity (i-mu- ni-te), or specific resistance, is directed at specific antigens. An immune response involves the production of specific cells and substances to attack a specific antigen. Immunity has “memory,” that is, if the same pathogen should reenter the body at a

Immune Responses – Primary And Secondary Immune Responses

When an antigen is encountered for the first time, it stimulates T cells and B cells to become activated and proliferate, producing clones that attack and destroy the invading antigen. This is the primary immune response, and it also produces memory cells that are able to recognize

Rejection of Organ Transplants

Organ transplants are viable treatment options for persons with terminal disease of certain organs such as the heart, kidneys, and liver. Except for the surgery, the major problem encountered is that the patient’s lymphoid system recognizes the transplanted organ as foreign and launches an attack against it.

Disorders of The Lymphoid System

The lymphatic system is a network made up of tissues and organs. It is made up of Lymph – a fluid containing white blood cells that defend against germs Lymph vessels – vessels that carry lymph throughout your body. They are different from blood vessels. Lymph nodes

The Inheritance of the More Common Inherited Disorders

Inherited, or genetic, diseases are caused by either chromosome abnormalities or specific alleles. The development of advanced techniques and new knowledge makes an understanding of genetic disease increasingly important. Chromosome Abnormalities Some genetic diseases are related to the presence of an additional chromosome or to the absence

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