21. The following is correct about superantigens? A. cause autoimmune disease C. activates B cells 22. Perforins and granzymes are synthesized by the following cell? A. TH1 B. Th2 C. macrophages 72 The foll B. activates many T cells D. are high molecular wt proteins D. CD8+ T cells

Q: Which of the following cells are involvedin innate immunity but not in adaptiveimmunity?a. helper T…

A: Immunology is the branch of science that deals with the immune system of an organism. There are two…

Q: Which of the following statements about T cells is false? a. Helper T cells release cytokines while…

A: Immunity is the capability of multicellular organisms to resist the attack of harmful…

Q: b Production of complement c. Production of IL-6 d. Production of CRP e. All of the above 41. NK…

A: Hey, since there are multiple questions posted, we will answer first two questions (41 and 42). If…

Q: pattern recognition receptor is cell receptor on a. cytokine b. monocyte c. epitope d. A and B

A: Pattern recognition receptor is found on the cells in our immune system.

Q: 28. The molecules mediating signal transduction on a B-cell following antigen binding to BCR are…

A: B cell It is a type of lymphocyte which is involved in providing the humoral immunity component of…

Q: how HPV was used to cure cancer? a. The HPV induced a type IV hypersensitivity immune response b.…

A: Human papiloma vaccine used in prophylaxis of cervical cancer

Q: Loss-of-function mutations in the common γ chain (γc) gene are particularly damaging to the immune…

A: The effect of genetic modification is termed "job-loss" in which the genetic product is reduced or…

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: All of the following have been observed in individuals deficient in either CD3δ or CD3ε except a.…

A: Answer: Introduction: CD3 means a cluster of differentiation is a complex of proteins and T- cell…

Q: All of the following are examples of how tumors or the microenvironment in which they develop…

A: Tumor cells are able to stimulate specific adaptive immune responses. However, most frequently these…

Q: Farmer's lung is a hypersensitivity pneumonitis resulting from a. a type I hypersensitivity reaction…

A: The body's defence mechanism against allergens, autoimmunity, and venom is hypersensitivity. Pollen,…

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: 29. T-cell dependent antigens can a. directly stimulate B cells to multiply and produce antibodies…

A: The correct answer is (c) restrict antibody formation. T-cell dependent antigens require the help of…

Q: 10. NK cells recognize and kill abnormal host cells that are: A. opsonized with IgE. B. lacking…

A: According to bartleby expert guidelines, when multiple questions are posted we are allowed to answer…

Q: The major inflammatory mediator released by degranulating mast cells in type I hypersensitivity is…

A: The body's defence mechanism against allergens, autoimmunity, and venom is hypersensitivity. Pollen,…

Q: Type II hypersensitivity reaction                                                  Type III…

A: Type IV hypersensitivity- Effector T cells specific for the sensitizing Ag Type II hypersensitivity…

Q: Identify which of the following is not a characteristic of belatacept. a. contains part of CTLA4…

A: Belatacept is a new immunosuppressive therapy designed that improves the clinical outcomes of kidney…

Q: The molecule will bind to a. Viral DNA, CD4 of the T-cells. b. Viral CD4, T-cells. c. Viral gp120,…

A: Microbes including bacteria and viruses can cause infective diseases on the host. They utilize…

Q: 16. Expression of CD25 and CTLA-4 is a characteristic of? A. TH1 B. TH2 Treg

A: CD25 is a protein marker for CD4+ thymocytes. It hs actually the α-chain of the IL-2 receptor. CTLA4…

Q: 1. Which of the following is true about the clonal selection theory? Select one: a. An antigen…

A: Clonal Selection theory states that a particular antigen will activates its counter specific…

Q: .

A: There are two types of the T cells based on the glycoprotein attached , these are CD4 cells and the…

Q: An example of innate immune cells are: A. Macrophages B. Dendritic cells C. T cells D. B cells…

A:

Q: Cytotoxic T cells express which of the following proteins on their cell surface? (Select all that…

A: T cells or T-lymphocytes are the immune cells. These cells are the type of white blood cells that…

Q: During the adaptive immune response, the role of helper T cells includes _____. Mark all that…

A: The adaptive immune response is the body's defense mechanism that learns and adapts to specific…

Q: Farmer's lung is a hypersensitivity a. a type I hypersensitivity b. a type II hypersensitivity c. a…

A: The body's defence mechanism against allergens, autoimmunity, and venom is hypersensitivity. Pollen,…

Q: Which of the following groups are not correctly matched? а. Neutrophils---antigen presenting cell b.…

A: Introduction: An immune system is a huge organization of cells and tissues that is continually…

Q: Describe how the immune system is able to produce receptors against a wide variety of antigens when…

A: Adaptive immune system :  As we know B cells and T cells ( white blood cells) are the part of…

Q: D. TH17 17. Down regulation of ..............allow naïve T cells to enter lymph nodes? B. B7 C.…

A: T cells These are white blood cells that belong to the adaptive immune system. These cells play a…

Q: At what stage of B cell development are autoreactive cells removed? A. stem cell stage B. pro-B…

A: These can be caused by pathogen or any other foreign agent. This function is carried out by the…

Q: All of the following are characteristic of regulatory T cells except a. they express CD25 b.…

A: BASIC INFORMATION  IMMUNE SYSTEM  It defends our body from the foreign particles which can cause…

Q: What produces Autoantibodies? Select one: a. Macrophages b. Memory T cells c. Plasma B cells d.…

A: Antibodies (immune proteins) that mistakenly target and react with a person's own tissues or organs…

Q: 3. Sudin is infected by pathogen D. Six days later, his blood is infected by pathogen E. Which cells…

A: Ans- C.  Memory T cells

Q: Dysfunctional repair of DNA double strand breaks often results in SCID because: thoose all that…

A: SCID stands for severe combined immunodeficiency disease.SCID is caused by adenosine deaminase (ADA)…

Q: Immature B cells specific for monovalent self antigens encountered in the bone marrow a. enter a…

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

Q: Match the T-cell component in Column A with its description in Column B. Use each description only…

A: The match the column with respect to t cells are as follows:

Q: How does the design of CAR T-cell therapies address the limitation of requiring 2 signals for full T…

A: CAR T-cell therapies are a type of immunotherapy that involves genetically modifying a patients T…

Q: The nucleus of B lymphocytes receives the signal indicating that the corresponding epitope was found…

A: The B lymphocyte (B cell) is indeed one of the body's most essential cells. By developing antibodies…

Q: 4. Which of the following is currently being studied as an adjunct therapy for cancer? Select one:…

A: 4) Adjuvant therapy - It is performed in addition to primary treatment in cancer in order to avoid…

Q: Which of the following is false about HLA class I molecules? A. They are encoded by multiple and…

A: INTRODUCTION HLA Human leukocyte antigen, when a cell is infected with virus or any harmful agent…

Q: 1. In central tolerance, 3 mechanisms deviate B cells away from making autoreactive antibody. Which…

A: These are multiple choice questions.

Q: A good example of molecular mimicry is a. Decreased number of regulatory T cells in aging. b. The…

A: Molecular mimicry, also known as "molecular similarity," is a key principle in immunology and…

Q: All of the following events occur within germinal centers except

A: Germinal centre It is abbreviated as GC and is a special type of structure formed in lymphoid and…

Q: 1. Match the hypersensitivity reaction with the cause.…

A: Type  II        :     B)      Small molecules binding to human cells producing structures that…

Q: During allergic sensitization, which of the following statements are FALSE? A. Allergen exposure…

A: If the foreign substance after entering the body is capable of inducing allergic reaction then the…

Q: Which of the following is not used as a treatment for autoimmune diseases? Select one: A. Anti-IL2…

A: A defense system in the body of an individual which constitutes a complex network of cells and…

Immune Disorders

The collaboration between the cells and proteins that work together as a defense system against infection comprises the immune system.Each of them performs a variety of tasks to recognize and/or react against a foreign body.