Which of the following statements about interferons is false? a. Interferons produced by virus-infected rabbit cells cannot be used to treat viral diseases in humans. b. Interferons have been used to treat hepatitis C and certain types of cancer.

Q: Identify the function of the Purkinje fibres. Select one: O a. O b. O c. O d. act as a pacemaker and…

A: The conducting system of heart consists of SA node, AV node, Right and left AV bundles, purkinje…

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: A T lymphocyte activated in the GALT will subsequently home to all of the following except _____.…

A: Gut associated lymphocyte tissue or GALT complex function is to form as a protective immune system…

Q: The human immunodeficiency virus has a preference forinfectinga. B lymphocytes.b. cytotoxic T…

A: The human immunodeficiency virus has a preference forinfecting

Q: What does the T-cell receptor on the helper T cell bind? free antigen in soluble form b. antigens…

A:

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: One-year-old Matthew always seems to be sick. When his blood is tested, there are no antibodies. The…

A: The lymphatic system consists of immune cells called lymphocytes. Lymphocytes are the primary cells…

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: The third line of defense includes: a. inflammation b. stomach’s digestive acid c. phagocytes d. MHC…

A: Answer is d.)  MHC proteins.

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: 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: Which is/are not part of innate immunity?a. phagocytic cells e. inflammationb. fever f. cytokinesc.…

A: The immune system covers the complex biological reactions that protect the body against invading…

Q: Immune responses tailored to specific antigens involvea. T cells.b. macrophages.c. monocytes.d.…

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

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: Acute inflammatory cells are ? Select one: a. ALL b. neutrophilic l c. leucocytes d. WBC

A: Inflammation is an important nonspecific defense reaction to cell injury. The hallmark signs of…

Q: Which of these statements about T lymphocytes is false? a. Saome T cells promote the activity of B…

A: Lymphocytes are types of leukocytes. There are two types lymphocytes in immune system:…

Q: HIV causes immunodeficiency by attackinga. memory B cells. c. plasma cells.b. helper T cells. d.…

A: HIV or Human Immunodeficiency Viruses are types of Lentivirus that infect Humans. Here we will see…

Q: Indicate whether the following questions are true (T) or false (F). a. Secondary immune responses…

A: When the body encounters an antigen, immune responses are produced. These immune responses can be…

Q: Which of the following statements is true? *   a. All of the statements are true. b. Lymph from the…

A: We know that The lymph node is a part of the lymphatic system. Generally, the lymph node is…

Q: Which of the following is not correct concerning interferon?a. Interferon is a protective protein.b.…

A: Answer- Interferons are the proteins that are secreted from the viral infected cells.

Q: Which is/are important in innate immune responses?a. interferonsb. clonal inactivationc. lymphocyte…

A: Innate immunity on non specific immunity includes all the defence elements with which and individual…

Q: may destroy infected cells. Select one: a. Phagocytic cells b. Natural killer T cells C. Cytotoxic T…

A: Pathogens are disease-causing microorganisms that upon entering a healthy body cause a variety of…

Q: Protein receptors found on macrophages that recognize foreign antigens a. toll-like receptors…

A: Macrophages are a type of white blood cell that takes part in protecting the body against foreign…

Q: When endogenous antigens "blend in"( i.e establish a presence on the cell membrane) between the…

A: An antigen is a molecule that stimulates the production of an antibody to generate an immune…

Q: The lymphatic system... A.Has a pumping mechanism to move fluid.  B. Includes areas of high…

A: Introduction:  The lymphatic system is the network of tissues, organs, and vessels that is…

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: During removal of cancerous tissue in breast cancer, lymph nodes in the armpit are also removed (if…

A: Mastectomy is a procedure which removes entire breast. Radical mastectomy:In this procedure ,most of…

Q: Which pertains to the immune response of a woman who has just inhaled a coronavirus to which she has…

A: Corona virus are a group of RNA viruses which causes disease in mammals and birds. They usually…

Q: Which of the following is part of the second line of defense? a. Interferons b. Phagocytes c.…

A: The immune system shows immune response in three stages the first line of defence includes the…

Q: Which are important in nonspecific immune defenses? a. interferons b. lymphocyte activation c.…

A: The immune system is an organ system of the body that is functionally responsible for protecting the…

Q: Why HIV doesn’t naturally induce a strong CD8+ T cell response

A: HIV or the Human Immuno Deficiency Virus attacks the body's ability to fight infectious diseases…

Q: A deficiency of both B cells and T cells is most likely a(n). a. secondary immunodeficiency b.…

A: Immunodeficiency is defined as the host's inability to defend against invading pathogens due to a…

Q: B cells proliferate and differentiate into plasma cells and memory cells in the ______________ of…

A: INTRODUCTION Secondary lymphoid organ This include spleen, lymph node and payers patches.

Q: Choose the correct one. Which cells produce antibodies? a. Neutrophils. b. Dendritic cells. c.…

A: We know that neutrophils are responsible for secreting cytokines during tissue injury. Hence, Option…

Q: A B cells B. Peri-arteriolar lymphoid sheath e. Antigen-presenting cells, e.g., macrophages D.…

A: 17.Answer--- correct option is D        Vascular sinus

Q: Which lymph duct would drain lymph that originated in the left arm? O A. right lymphatic duct O B.…

A: Lymph nodes channel substances that movement through the lymphatic fluid, and they contain…

Q: The T lymphocytes as macrophages, secrete a number of polypeptides (cytokines) generally called…

A: Immune system protects the body against infection. It is a complex network of cells and proteins.…

Q: The cytolytic action of the complement system is most similar to the action ofa. interleukin-1.b.…

A: Complement system- It is a cascade system, plays a role in immune system by enhancing the antibodies…

Q: Which of the following are pattern recognition receptors? A, receptors for interferons B. lymphocyte…

A: Various PRRs can be secreted by cells, and bind straightforwardly to invading micro organisms. A few…