Type I (immediate) hypersensitivity A. is mediated by IgE B. is mediated by T lymphocytes C. both is mediated by IgE and involves degranulation of mast cells D. involves degranulation of mast cells

Q: Which of the following statements about innate lymphoid cells is true? (ONE ANSWER)   Require the…

A: Innate lymphoid cells (ILCs) are immune cells that lack a specific antigen receptor but can produce…

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: plement system of defense is opsonization. This process  A.) creates an acidic environment that…

A: Pathogen can be defined as the infectious agent is considered as the biological agent that  will…

Q: Which of the following is not associated with killing by a cytotoxic T cell? View Available Hint(s)…

A: T cells are type of lymphocytes ( WBC )  that play vital role in Adaptive immunity . They are formed…

Q: The first cell type active in the innate response is usually a(n)       A) phagocyte.…

A: The innate immune system is the first line of defence in the body.

Q: All of the following are responses to allergen detection generated by mast cells EXCEPT a.…

A: Mast cells are myeloid lineage cells. They are involved in immune responses of body. Upon…

Q: Why must antibody treatments like ZMapp be composed of monoclonal antibodies instead of polyclonal…

A: ZMapp is a experimental drug against Ebola virus. It consists of three monoclonal antibody.…

Q: In the laboratory you observe that IL-4 stimulates the proliferation of B cells, cytotoxic T cells…

A: Introduction: Cytokines are a group of proteins that serve as chemical messengers and are secreted…

Q: A second exposure to a given foreign antigen elicits a rapid and pronounced immune response…

A: Immunity is the capability of the body to fight against foreign attack and maintain the persistence…

Q: One very effective treatment for SARS-Cov-2 is the injection of serum containing antibodies from…

A: Naturally acquired immunity is when the body encounters live pathogens which causes disease and the…

Q: Type II hypersensitivity reaction                                                  Type III…

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

Q: The contact with allergen that primes mast cells is the a. sensitizing dose…

A: An allergen is any compound detected by the immune response that triggers an adverse reaction that…

Q: A number of minor cancerous cells and infected viruses, such as Epstein Barr (EBV), are able to go…

A: Cytotoxic T cells or cytotoxic T lymphocytes are the type of T lymphocytes that plays a role in…

Q: Antibodies can have multiple mechanisms of action. The main mechanism is "flagging" a foreign body…

A: Antibodies are immunoglobulin proteins that are produced by the immune system as a result of the…

Q: Which of the following is not a function of antibodies? Select one: a. They neutralize pathogens by…

A: Introduction: The proteins that are produced in response to an antigen are called antibodies. It is…

Q: Describe the reason as to why inducing plasma cells to secrete IgG instead of IgE prevents type |…

A: A biological system called the immune system is in charge of identifying and eliminating foreign…

Q: Figure shows a series of events for the response in innate immune defense. a)State ONE main event…

A: Innate immunity is an immunity that is present during the birth of an individual. It is also known…

Q: A patient has contracted an upper respiratory infection caused by a virus. Her initial adaptive…

A: Immunity is the body’s ability to resist and eliminate the potential harmful foreign invaders to…

Q: Which statement is incorrect regarding Type IV Hypersensitivity? O A) T-helper cells are activated…

A: Contact dermatitis takes place when the skin comes in contact with an allergen directly. It results…

Q: Maternal antibodies transmitted via the placenta: A. are an example of natural passive immunity B.…

A: Active immunity is that immunity that is developed because of exposure of the body to an antigen or…

Q: The _____ occurs 6–8 hours after an initial type I allergic response in which mast cells produce…

A: Type I hypersensitivity reaction.

Q: The main effect of staphylococcal protein A is toa) interfere with phagocytosis.b) enhance the…

A: Answer is b.) enhance the attachment of the Fc portion of antibody to phagocytes.

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: Type II hypersensitivities are due toa. IgE reacting with mast cellsb. activation of cytotoxic T…

A: Normal immune system produces undesirable reactions such as allergies and autoimmunity and this is…

Q: The pathogenesis of food allergy involves:       a)  The production of immunoglobulin G to…

A: The immune system is a control network of organs and immune cells that detect and kill foreign…

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: There are different pathways through which B cells can be activated, one of which is CD4 T -…

A: B cells are a type of white blood cell of the lymphocyte subtype. They function in the humoral…

Q: Contact dermatitis: A. is antibody mediated B. is both a type I hypersensitivity reaction and is…

A:

Q: The primary role of complement control proteins that operate in the early stages of complement…

A: In response to antigenic stimulation, antibodies are produced which are immunoglobulins. The…

Q: During the secondary immune response, in the serum you would expect a. to find a greater…

A: Introduction The secondary immune response occurs on repeated antigen exposures, with a stronger…

Q: tion. A) They release histamine in response to allergens. B) They release perforins to poke holes in…

A: There are two types of immunity in the body first is the humoral immunity which works by the action…

Q: Which of the following mechanisms can promote tolerance? I. Induction of anergy II. Induction of…

A: Introduction  Tolerance: refers to susceptibility to certain pathogen as well as our own cells,…

Q: If a T-cell receptor on a double-positive thymocyte binds to a self-peptide:self-MHC class I complex…

A: The immune system is the shield of the body that protects it from outside intruders, like…

Q: All of the following are true in reference to T-cell priming except _____. a. it occurs in primary…

A: The immune system of the human body consists of white blood cells, antibodies, spleen, thymus, and…

Q: If B cells making high-affinity IgG4 are unable to switch to IgE at a late stage in the germinal…

A: Helminths are parasites that cause several infections.

Q: Mobilization of neutrophils to fight infection in tissue is mediated by all except which a. TNF-a…

A: The immune system is a control network of organs and immune cells that detect and kill foreign…

Q: Nowadays, in the clinical field of cancer vaccines, is there a potential to eliciting autoimmune…

A: Immune system is the system of body who provide protection by the pathogenic microorganisms

Q: MHC restriction is best described as a. elimination of thymocytes bearing T-cell receptors that…

A: The class of protein present on every body's cell of vertebrates are a major histocompatibility…

Q: Chronic granulomatous disease Select one: A. is caused by a decrease in the number of phagocytes.…

A: Immunodeficiency occurs due to hereditary defects are called primary immunodeficiency and when…

Q: There is a second, delayed spike of IgM in the secondary response. Why might this be…

A: The primary immune response occurs when an antigen comes in contact with the immune system for the…

Q: Which of the following statements is true about the IL-1 family of cytokines? A. They are powerful…

A: IL-1(Interleukin-1) family of cytokines are a group of 11 cytokines that are associated with innate…

Q: B lymphocytes, the precursors of plasma cells, are triggered to proliferate by the binding of…

A: Lymphocytes are white blood cells . They are immune cells made in bone marrow and found in blood and…

Q: Which ONE of the following is TRUE regarding adult T‐cell leukaemia‐lymphoma?

A: Adult T-cell Leukemia/Lymphoma (ATLL) is a disease which refers to the mature T cell neoplasm of…

Q: Homing of effector T cells to inflamed tissue is facilitated by the upregulation of _____ on the…

A: Answer : Option (a) VLA -4 Homing of effector T cells to inflamed tissue is facilitated by the…

Q: A mouse was injected with an antigen that is known to induce the generation Th1 helper T cells. At…

A: *Here a mouse was injected with antigen that is known to induce the generation Th1 helper T cells.…

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.