1. Which one of the following is NOT associated with type IV hypersensitivity reaction? Select one: a.  plays a crucial role in our body's ability to fight various intracellular pathogens b. Involves CD8+Tcells, CD4 TH1 cells, macrophages activation c. one of the mechanisms that causes tissue injury and disease in response to antigens d. antibody-mediated response e. Involves cytokine-mediated inflammation in tissue f. takes several days to develop

Q: None

A: Refer to the solution

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A: The different terms mentioned in the question are related to the development and formation of the T…

Q: hypersensitivity reactions

A: Responses to antigens that result in exaggerated immune reactions, leading to tissue damage or other…

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: Match the appropriate term on the left with the appropriate definition of the right…

A: The immune system protects us from pathogenic infections.

Q: The process of removing auto-reactive b and T cells during maturation is called: a. Clonal…

A: Clonal deletion is the removal through apoptosis of B cells and T cells that has expressed…

Q: Match the term with its correct description. Transcription factor required for T-cell development…

A: Introduction T-cells are the important immune cells that are developed in the Thymus. These are…

Q: All of the following apply to allergic responses (Type I Hypersensitivities) EXCEPT: (choose what…

A: Allergic reactions, especially Type I hypersensitivity reactions, are a typical immune system…

Q: Outline the process of B-cell activation against a T-dependent antigen.

A: B cells, also known as B lymphocytes, are a type of white blood cell of the small lymphocyte…

Q: What is one way that CD8+- cells are activated? A. by binding to a processed antigen on an MCH II…

A: White blood cells called CD8+ T cells are also referred to as cytotoxic T cells. These cells are…

Q: Type II hypersensitivity reaction                                                  Type III…

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

Q: Organize the following steps in order of antibody production. A. CD40L-CD40 interaction turn on…

A: The process of antibody production begins with the activation of a CD4 T cell by a dendritic cell…

Q: Take-home assignment: Please name the type of hypersensitivity AND describe the cause, immune agent…

A: Hypersensitivity refers to undesirable reactions produced by the normal immune system, including…

Q: Explain the difference between the two ways that alloreactive T cells can be stimulated in an acute…

A: Acute transplant rejection happens days to months following a transplant when the immune system…

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: Compare and contrast Complement with Immunoglobulins. Include a discussion comparing the four…

A: Complement is a set of plasma proteins that comprise a complement system or complement cascade,…

Q: Match the antibody class to its correct description. Select the INCORRECT choice. a. IgE / the…

A: Immune system protects the body against foreign antigens and pathogens. Antibodies are proteins…

Q: What immune defense would be most impacted for a patient with a C9 complement protein deficiency? Be…

A: The complement system is a complex network of proteins that play a vital role in the immune…

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

A: These are multiple choice questions.

Q: 6. Match the example/scenario provided to the type of humoral immunity. a. active, naturally…

A: The ability of the body to fight back any infection in the body comes from its immune system. The…

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

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

Q: 1.Label the following figure that shows the sequence of events by which cytotoxic T cells destroy…

A: There are two types of immunity.  Innate immunity - It is present since birth. It is non-specific.…

Q: How may B cells be activated? Select all that apply. Select one or more: a. Crosslinking of BCRS and…

A: How may B cells be activated?

Q: Type I (immediate) hypersensitivity A. is mediated by IgE B. is mediated by T lymphocytes…

A: Hypersensitivity refers to undesirable reactions produced by the normal immune system including…

Q: What is different about a type IV hypersensitivity reaction versus the other three types?

A: Exaggerated or inappropriate immune reactions to an antigen or allergen are known as…

Defense Mechanism

Circumstances influence and compel people to behave in a certain way. One such behavior is a defense mechanism. It is employed by people to escape from unpleasant circumstances, thoughts and actions. Defense mechanisms are, thus, psychological strategies that help to avert and avoid unwanted feelings such as guilt or shame and situations such as threat and danger.