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substance that the body recognizes as foreign; evokes an immune response. Most are proteins or protein fragments
Lymphocyte that originates in the bone marrow and transforms into a plasma cell to secrete antibodies.
Specialized macrophage that digests foreign cells and helps B and T cells to mark antigens for destruction.
Helper T cell
Lymphocyte that aids B cells and cytotoxic T cells in recognizing antigens and stimulates antibody production
Antibodies that are secreted by plasma cells in response to the presence of an antigen
Fluid in the spaces between the cells. This fluid becomes lymph when it enters lymph capillaries.
Thin, watery fluid found within lymphatic vessels and collected from tissues throughout the body.
Carrier of lymph throughout the body; empty lymph into veins in the upper part of the chest.
Right Lymphatic Duct
Large lymphatic vessel in the chest that receives lymph from the upper right part of the body.
Lymphocyte that originates in the bone marrow but matures in the thymus gland; works by destroying antigens or producing chemicals which are toxic to antigens.
The ability of T lymphocytes to recognize and accept the body's own antigens as self or friendly.
Large Lymphatic vessel in the chest that receives lymph from below the diaphragm and from the left side of the body above the diaphragm.
Organ in the mediastinum that conditions T lymphocytes to react to foreign cells and aids in the immune response.
Exposure of an individual to a foreign protein that provokes an immune response. The response will destroy any cell that possesses the antigen on its surface and will protect against infection.
Weakened or killed microorganisms, toxins, or other proteins given to induce immunity to infection or disease.
Group of clinical signs and symptoms associated with suppression of the immune system and marked by opportunistic infections, secondary neoplasms, and neurologic problems
helper T cells that carry the CD4 protein antigen on their surface. HIV binds to CD4 and infects and kills T cells bearing the protein
Malignant lesion associated with AIDS; arises from the lining of capillaries and appears as red, purple, brown, or black skin nodules
infectious diseases associated with AIDS; they occur because HIV infection lowers the body's resistance and allows infection by bacteria and parasites that normally are easily contained
drug that treats AIDS by blocking the production of protease, a proteolytic enzyme that helps to create new viral pieces for HIV
Reverse Transcriptase Inhibitor
drug that treats AIDS by blocking reverse transcriptase, an enzyme needed to make copies of HIV
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