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Transcript
Lesson 5.3 Lymph and Blood Cells – Key Terms Agglutination Alleles Antibody Antigen B lymphocyte (B cell) Blood type (group) Immunity Lymph Lymph node Lymphocyte Macrophage Memory cell Clumping of microorganisms or blood cells, typically due to an antigen-antibody interaction. Alternate forms of a single gene that control the same inherited trait (such as type A blood) and are located at the same position on homologous chromosomes. An antigen-binding immunoglobulin, produced by B cells, that functions as the effector in an immune response. A foreign macromolecule that does not belong to the host organism and elicits and immune response. A type of lymphocyte that develops in the bone marrow and later produces antibodies, which mediate humoral immunity. One of the classes (as A, B, AB, or O) into which individual vertebrates and especially human beings or their blood can be separated on the basis of the presence or absence of specific antigens in the blood. A condition of being able to resist a particular disease especially through preventing development of a pathogenic microorganism or by counteracting the effects of its products. A usually clear fluid that passes from intercellular spaces of body tissue into the lymphatic vessels, is discharged into the blood by way of the thoracic duct and right lymphatic duct, and resembles blood plasma in containing white blood cells and especially lymphocytes but normally few red blood cells and no platelets. Any of the rounded masses of lymphoid tissue that are surrounded by a capsule of connective tissue, are distributed along the lymphatic vessels, and contain numerous lymphocytes which filter the flow of lymph passing through the node. Any of the colorless weakly motile cells that originate from stem cells and differentiate in lymphoid tissue (as of the thymus or bone marrow), that are the typical cellular elements of lymph, that include the cellular mediators of immunity, and that constitute 20 to 30 percent of the white blood cells of normal human blood. An amoeboid cell that moves through tissue fibers, engulfing bacteria and dead cells by phagocytosis. A long-lived lymphocyte that carries the antibody or receptor for a specific antigen after a first exposure to the antigen and that remains in a less than mature state until stimulated by a second exposure to the antigen at which time it mounts a more effective immune response than a cell which has not been © 2014 Project Lead The Way, Inc. Human Body Systems Lesson 5.3 Lymph and Blood Cells – Key Terms – Page 1 Pathogen Pedigree T lymphocyte (T cells) exposed previously. A specific causative agent (as a bacterium or virus) of disease. A diagram of a family tree showing the heritable characters in parents and offspring over multiple generations. A type of lymphocyte responsible for cell-mediated immunity that differentiates under the influence of the thymus. © 2014 Project Lead The Way, Inc. Human Body Systems Lesson 5.3 Lymph and Blood Cells – Key Terms – Page 2