directly kill cancer cells. Their aim is to activate and instruct the dendritic cells‚ by making them capable of inducing a specific anti-tumour immune response. In particular‚ the aim of therapeutic cancer vaccination is to activate cytotoxic T lymphocytes (CTL)‚ which are the main soldiers of the immune system against cancer cells. 3.2.1 What are dendritic cells and why are they important? Dendritic cells are a family of immune cells‚ distributed in various tissues and organs and constantly circulating
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mesothelium ‚collagen‚ elastic and a few reticular fibers and trabeculae Sketch of Tonsil Slide: Describe the structures you observed on the slide I can see lymphocytes‚ macrophages‚ stratified squamous epithelium and reticular fibers Sketch of Thymus Slide: Describe the structures you observed on the slide I can see lymphocytes‚ large macrophages‚ fat cells‚ medulla and a capsule. Questions: A. How are lymph‚ lymphatic vessels and lymph nodes related? They are related because;
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Staying Healthy- Explain 2 different ways in which your immune system can destroy invading pathogens. References http://www.bbc.co.uk/schools/gcsebitesize/science/ocr_gateway/understanding_organisms/staying_healthyrev4.shtml http://www.bbc.co.uk/schools/gcsebitesize/science/ocr_gateway/understanding_organisms/staying_healthyrev5.shtml http://www.bbc.co.uk/schools/gcsebitesize/science/aqa_pre_2011/human/defendingagainstinfectionrev4.shtml How can your body stop pathogens getting into your body
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Jessica Addai Madhu UmashankarPd.8 AP Biology Final Severe Combined Immunodeficiency (SCID) Severe combined immunodeficiency also known as SCID is a rare inherited immunodeficiency disorder which is caused by defects in one’s genes. SCID exposes life threatening infection through dangerous viruses‚ bacteria‚ and fungi to the human body which could possibly lead to death or permanent harm to one’s health. SCID is therefore known as the "boy in the bubble" syndrome because through the possibilities
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different types of WBCs • Neutrophils (60%) Lymphocyte Monocyte – kill bacteria • Eosinophils (2%) – Allergic response – Parasite killing Lymphocyte Neutrophil • Basophils (1%) – Allergic reactions • Monocytes (4%) – Become macrophages • Lymphocytes (33%) Neutrophil Monocyte Neutrophils – Direct the immune system Other cells Fibroblast‚ platelets‚ some epithelial cells…etc. Eosinophil Basophil Lymphocytes • Two types of lymphocytes – T-Cells (Thymus derived) • Natural Killer Cells
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CHAPTER #35 Answer Key QUESTION 1: Which type of immunity becomes active as a result of the infection of a specific microorganism? a) Naturally acquired passive immunity b) Naturally acquired active immunity c) Artificially acquired active immunity d) Artificially acquired passive immunity Correct Response: a) Naturally acquired active immunity Explanation: Naturally acquired active immunity occurs as a result of an infection of a specific microorganism. Active acquired immunity refers to immunologic
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right lymphatic duct empty lymph into the blood. B. LYMPHATIC ORGANS * The lymphocytes originates from red bone marrow and are carried by the blood to lymphatic organs‚ the lymphocytes divide and increase in number when the body is exposed to microorganisms or foreign substances. * Lymphatic tissue has very fine reticular fibers; these fibers form an interlaced network that holds the lymphocytes and other cells in place. * Tonsils * Form a protective ring of lymphatic
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1. Anemia is the significance of a lower than normal hematocrit. If there’s a bacterial infection on the hematocrit then the percentage can be affected it can either go higher or lower. 2. The development of lymphocytes is different to other elements because lymphocytes not only develop in bone marrow and finish in lympatic tissue. Other elements start and finish their development in bone marrow. 3. Erythropoiesis is the specific production of red blood cells. Negative feedback increases
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cell‚ ending its specialization there as a crucial part of the immune system‚ or become a small lymphocyte. The small lymphocyte may become a T lymphocyte‚ known also as a T cell‚ which can specialize into more specific T cells by becoming‚ for example‚ helper T cells or even a memory T cell; the latter of which is imperative in making vaccines effective. Yet‚ a small lymphocyte may also be a B lymphocyte cell‚ which find themselves as the war factories during a battle against disease; producing antibodies
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Fever) Increased (monocytosis): Monocytic leukemia‚ ulcerative colitis‚ viral diseases (mononucleosis and herpes zoster)‚ parasitic diseases (Rocky Mountain Spotted Fever) B Lymphocytes (B Cells): humoral immunity T Lymphocytes (T Cells): cell-mediated immunity B Lymphocytes (B Cells): humoral immunity T Lymphocytes (T Cells): cell-mediated immunity Decreased (neutropenia): Vital conditions‚ overwhelming infection that exhausts bone marrow‚ cancer drugs‚ antibiotics and psychotropic drugs
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