Systemic anaphylaxis is caused by the presence of allergen in _____. a. the gastrointestinal tract b. the respiratory tract c. the circulation d. the skin e. mismatched blood transfusions.

Q: Which of the following immune cells are most efficient for eliminating parasitic worms? 單選: A.…

A: Eosinophils as effector cells against parasites. Following nematode infection, eosinophils gather…

Q: will involve the secretion of which will induce intracellular microbial The activation of killing a.…

A: Cytotoxic T-cells,INF-gamma  Hence option (d) is correct . EXPLAINATION:- cytotoxic T cells kill…

Q: T  ________cells assist in the functions of certain B cells and other Tcells.a. sensitized b.…

A: Immune responses is a specific reactivity induced in a host by an antigenic stimulus. It could be of…

Q: Which of the following is a critical feature ofimmediate hypersensitivity?a. inflammationb.…

A: Immediate hypersensitivity or type I hypersensitivity response is the binding of allergen-specific…

Q: 22. Your patient is born without B cells. He cannot a. fight off intracellular infections b. have a…

A: Here we have to describe if a patient is born without B cells what will happen or what she/he cannot…

Q: are released by helper T cells to mobilize immune cells and macrophages and attract other leukocytes…

A: Helper T cells are the T lymphocytes that activate the cytotoxic T cells and B cells.

Q: B cells: a. are produced in the adult spleen b. lyse bactterial cell walls by secreting digestive…

A: B lymphocytes (B cells) are type of white blood cell. They play important role in the humoral immune…

Q: antigen presenting cells are necessary for ___ response to a foriegn antigen a. b lyphocyte b. t…

A: Innate immune responses are not specific while adaptive immune responses are specific immune…

Q: A potential cause of acquired autoimmunity is ________. a. tissue hypersensitivity b. molecular…

A: Autoimmunity can be defined as the immune response of organism against their own healthy tissues.So…

Q: The acquired ability to prevent an unnecessary or destructive immune reaction to a harmless foreign…

A: Immune tolerance is significant for ordinary physiology. Central tolerance is the fundamental way…

Q: Systemic distribution of TNF-α in the blood circulation may cause _____. a. respiratory burst b.…

A: Tumor Necrosis Factor alpha (TNF alpha), is an inflammatory cytokine produced by…

Q: Roundworms or 'filarial nematodes' can enter either the lymphatics or blood vessels. You would…

A: Filariasis is a disease that is mainly caused by the parasite Wuchereria bancrofti. Human is the…

Q: All of the following are associated with ectopic lymphoid tissues except _____. a. they form by a…

A: The cells and organs that make up the lymphatic system like bone marrow, white blood cells, thymus,…

Q: 30 Year old male develops severe oral Candida infection not on steroids or antibiotics. He has a hx…

A: Viral infections are caused by viruses which are tiny infectious agents that can invade and…

Q: Which of the following is not an autoimmune disease?a. multiple sclerosisb. myasthenia gravisc.…

A: Immunity can be defined as the ability of an organism to fight against infections caused by a…

Q: .BCG provides protection from the following infections EXCEPT: a. Tuberculosis b. Leprosy c.…

A: We know a Vaccine is a preparation that mainly provides immunity against a given disease. Types of…

Q: Antibodies are______ . a. antigen receptors c. proteins b. made only by B cells d.all of the above

A: Antibody  Antibody is the Y shaped molecules that fight with foreign objects or pathogens.

Q: Deficiencies in complement components C1–C4 are associated with _____. a. neutropenia b. chronic…

A: Deficiencies in complement components C1 - C4 are associated with immune - complex disease .…

Q: A potential cause of acquired autoimmunity is________.a. tissue hypersensitivityb. molecular…

A: Autoimmunity is a condition in which a body's immune response is generated against its own tissues…

Q: Which of the following is a function of the thymus?a. production of red blood cellsb. secretion of…

A: Answer: Introduction: Primary lymphoid organs – Primary lymphoid organs are including thymus, Bursa…

Q: All of the following occur after B cells leave the bone marrow except a. peripheral tolerance b.…

A: The lymphoid cell production and maturation follow the transition from primary to secondary lymphoid…

Q: An individual B cella. produces antibodies with sites that can bind manydifferent antigens.b.…

A: Antibodies: also called as agglutinogen. These are special chemicals found in the blood which act…

Q: An important distinction between macrophages that populate the lamina propria of the gut and the…

A: Answer is c.) do not possess signaling receptors needed for production of inflammatory cytokines.

Q: . An anaphylactoid reaction:     A. is another name for anaphylaxis   B. occurs in patients who…

A: Anaphylactic reactions in the perioperative phase are frequently significant and possibly…

Q: Match the following antibodies with the correct definition. _____ IgD a. Antibody found in…

A: The immune system has evolved to protect organisms from pathogens. It creates a variety of cells and…

Q: An adult who has been thymectomized will have a T-cell repertoire that _____. a. resembles a…

A: The answer is described in the next step:-

Q: B cells are most important in the _______ immunity type of _______ immunity.

A: Immunity is the resistance to disease. The two important components of immunity are innate and…

Q: what cell provides cell mediated immunity a. monocytes b. b lymphocte c. cytotoxic t cells d.…

A: Cell-mediated immunity is one branch of adaptive immunity. Other branch of adaptive immunity is…

Q: Unlike inflammation, fever is a(n). immune response. A. cellular B. localized C. adaptive D.…

A: Immune system contains a group of antibodies, phagocytes and other barriers which protect the body…

Q: B Lymphocytes typically target:   a. parasitic worms   b. bacteria   c. viruses   d. intracellular…

A: they are essential for humoral immunity they are known as memory cells plasma cells are mature B…

Q: .If thymus gland is removed from a newborn, ___________. A. lymphoid organs are not affected B.…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: . Select the cell types that belong to the myeloid lineage. (more than one answer)  NK cells…

A: Immune system in the body consist of widely distrobuted cells which recognise foreign substances and…

Q: An example of an inflammatory mediator that stimulates vasodilationisa. histamine b. collagen c.…

A: Inflammation is a localized immunized response that leads to swelling. Redness, pain, numbness,…

Q: Which of the following are phagocytes? 1. Neutrophils II. Macrophages III. Natural killer cells

A: Phagocytes are a type of white blood cell that plays an important role in the body's immune system.…

Q: 9. Coronary arteries route oxygen rich blood into the tissues of the heart. They branch off of the:…

A: As per our honor code, we are allowed to answer only one question at a moment. You have posted…

Q: Non-protein antigens are ineffective becase they cant A. Trigger IgM production B. Be used as a…

A: Antigens are any substances with a biological origin and are able to elicit immune reasons by…

Q: Inflammatory cytokines a. act as opsonins. Ob. are produced only by phagocytic cells. c. facilitate…

A: Immunology is a section of biology that includes the study of molecules, cells, and organs that…

Q: Receiving someone else’s antibodies as a treatment for rabies would be considered: A.Natural active…

A: Immunity is the ability to fight against the foreign antigen and is able to resist the disease that…

Q: are cytolytic proteins that binds to target cell's plasma membrane to form pores. a. Chemokines b.…

A: The immune system is a network of cells and  proteins which form a various level of barrier to…

Q: Feeding peanut to infants early а. Reduces rate of developing peanut allergy b. Increases Tc towards…

A: Even if a prior response was minor, a severe reaction termed anaphylaxis can be brought on by a…