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Bio CH12

Biology CH12 Blood

AIDS Acquired Immune Deficiency Syndrome; a disease of the immune system
anemia a condition in which there are too few red blood cells in the blood
antibody chemicals that help destroy bacteria or viruses
antigen foreign substances, usually proteins,that invade the body and cause diseases
bone marrow the soft center part of the bone
hemoglobin a protein in red blood cells that joins with oxygen and gives the red cells their color
hemophilia a disease in which a person’s blood won’t clot
Immune system the body system made up of proteins, cells, and tissues that identify and defend the body against foreign chemicals and organisms
immunity the ability of a person who once had a disease to be protected from getting the same disease again
leukemia a blood cancer in which the number of white blood cells increases at an abnormally fast rate
plasma the nonliving, yellow liquid part of blood
platelet cell parts that aid in forming blood clots
red blood cell cells in the blood that carry oxygen to the body tissues
white blood cell the cells in the blood that destroy harmful microbes, remove dead cells, and make proteins that help prevent disease