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acquierd immunodeficiently syndrome (AIDS)
a syndrome caused by the human immunodeficiency virus (HIV) that renders immune cells ineffective permitting opportunistic infections,malignacies transmitting sexually or through exposure to contaminated blood
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anemia
a condition in which thier is a reducton in the number of red blood cells, the amount of hemoglobin, or the volume of packed red cells in the blood, resulting in a diminished ability of the red blood cells to transport oxygen to the tissues
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aplastic anemia
a normocytic-normochromic type of anemia characterized by the failure of bone marrow to produce red blood cells
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iron deficiency anemia
a microytic-hypochromic type of anemia charactrerized by lack of iron, affecting production of hemoglobin and characterized by small red blood cells containing low amounts of hemoglobin
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pernicious anemia
a macrocytic-normochromic type of anemia characterized by an inadequate supply of vitamin B 12 causing red blood cells to become large vaired in shape, and reeduced in number
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autoimmune diease
any disorder characterized by abnormal funtion of the immune system that causes the body to produce antibodies against itself, resulting in tissue destruction or loss of function; rheumatoid arthritis and lupus are examples of autoimmune disease
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erythroblastosis fetalis
a disorder that results from the incompatibility of a fetus with an Rh-positive blood factor and a mother who is Rh negative, causing red blood cell destruction in a fetus; necessitates a blood transfusion to save the fetus
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Rh factor
the presence, or lack, of antigens on the surface of red blood cells that may cause a reaction between the blood of the mother and fetus, resulting in fetal anemia
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Rh positive
the presence of antigens
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Rh negative
the absense of antigens
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hemochromatosis
a hereditary disorder that results in an excessive buildup of iron deposits in the body
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hemophilia
a group of hereditary bleeding disorders in which there is a defect in clotting factors necessary for the coagulation of blood
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leukemia
a chronic or acute malignant disease of the blood-forming organs, marked by abnormal leukocytes in the blood and bone marrow
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myelodysplasia
a disorder within the bone marrow characterized by the proliferation of abnormal stem cells (cells that give rise to different types of blood cells)
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lymphoma
any neoplastic disorder of lymph tissue, usually malignant, as in Hodgkin disease
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metastasis
the process by which cancer cells are spread by blood or lymph circulation to distant organs
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mononucleosis
a condition caused by the Epstein-Barr virus characterized by an increase in mononuclear cells in the blood, along with enlarged lymph nodes, fatigue, and sore throat
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polycythemia
an increase in the number of erythrocytes and hemoglobin in the blood
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septicemia
a systemic disease caused by the infection of microorganisms and their toxins in the circulating blood
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thrombocytopenia
a bleeding disorder characterized by an abnormal decrease in the number of platelets in the blood, which impairs the clotting process
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