increases temperature. 8. What is an antigen? A foreign substance that enters the body and alters the defenses in the body. 9. Identify several differences between the lymphocyctes. a. B Lymphocytes: produced in the bone marrow and are part of the humoral response. b. T Lymphocytes: mature in the thymus gland and are part of the cell mediated response. 10. What is the role of MHC? The role of MHC is to be a surface marker to indicate to the helper T-cells if it is a foreign
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of white blood cell would you expect to be most common in a normal blood smear? Neutrophils 3. A differential count of white blood cells from a patient gave the absolute number of lymphocytes as 8000 per mm3 and the total number of white blood cells as 12‚000 per mm3. Calculate the percentage of lymphocytes in this sample of white blood cells. Is this a normal or abnormal percentage? Explain your answer. You divide 8000 by 12000 and then times by 100. This will give you 2/3% (66.67%) . this
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Chapter 19- The Cardiovascular System: The Blood 1) Which of the following is NOT function of blood? A) transports nutrients‚ wastes and gases B) regulates pH C) defends against infection D) promote blood loss E) distribute heat 2) Which of the following is correct? A) A 100 lb (45 Kg) woman will have about 8 lb (3.6 Kg) of blood. B) Most adult humans have between 4 and 6 L of blood‚ depending on their size. C) Normal blood is less viscous than water and has a neutral pH. D) A and
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Define complete antigen‚ hapten‚ self-antigens‚ and antigenic determinant. 14. Compare and contrast the origin‚ maturation process‚ and general function of B and T lymphocytes. 15. Define immunocompetence and self-tolerance‚ and describe their development in B and T lymphocytes. 16. Name several antigen-presenting cells and describe their roles in adaptive defenses. 17. Define humoral immunity. 18. Describe the
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The Immune System - Overview We are surrounded by billions of bacteria and viruses. To many of them‚ a human being is like a walking smorgasbord‚ offering nearly limitless resources that they can use for energy and reproduction. Luckily for us‚ getting into the human body is not an easy task! From the point of view of these tiny organisms‚ a human is a bit like a fortress. The skin is thick and very hard to penetrate. In addition‚ the skin also produces a variety of substances that are harmful
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Cancer Society‚ 2016). More test is being done to determine the subtype of ALL. Tests that are being done are a cytogenetic test‚ flow cytometry and another lab test to group ALL into immunophenotypes of leukemia. These test check for the type of lymphocyte either B cell or T cell of the leukemia cell and how mature they are. With the new testing and new grouping‚ they have replaced the FAB classification and are now B-cell ALL and T-cell ALL. B-cell ALL first classification is: early pre-B ALL‚
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Assignment Hematology and normal biochemical parameters of Hamster‚ Gerbil and Cat HEMATOLOGY AND NORMAL BIOCHEMICAL PARAMETERS OF HAMSTER |S.No |Parameter |Value | |1 |Glucose |3.61- 4.07
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basis for vaccinations against disease. The immune system has the ability to recognize‚ remember‚ and destroy over a million different antigens. T cells vs. B cells In the embryo‚ T lymphocytes are produced in the bone marrow and thymus. They then migrate to the spleen‚ lymph nodes‚ and lymph nodules. B lymphocytes are produced in the embryonic bone marrow and migrate to the spleen and lymph nodes and nodules as well. T and B cell immunity is specific‚ meaning that one foreign antigen is the target
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Tonsillitis is inflammation of the pharyngeal tonsils. The inflammation usually extends to the adenoid and the lingual tonsils; therefore‚ the term pharyngitis may also be used (1). Tonsillitis most often occurs in children; however‚ the condition rarely occurs in children younger than 2 years. Tonsillitis caused by Streptococcus species typically occurs in children aged 5-15 years‚ while viral tonsillitis is more common in younger children (1). Most cases of bacterial tonsillitis are caused by group
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5) The lymphatic system involves which of the following organs? E) A‚ B‚ and Answer E 7) In the inflammatory response‚ the absence of which of the following would prevent all the others from happening? D) release of histamine Answer: D 10) Inflammatory responses may include all of the following except C) reduced permeability of blood vessels to conserve plasma. Answer: C 12) A bacterium entering the body through a small cut in the skin will do which of the following? E) activate
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