How do helper and cytotoxic T cells recognize and respond to antigens?

Q: What activates a Helper T-cell?

A: Immune system is system which helps our body to fight against the foreign substances which will…

Q: What is the two types of cells that result from activation of B and T cells?

A: Introduction: - The T and B lymphocytes (T and B Cells) are involved in antigen-specific immune…

Q: How do T cells recognize their targets?

A: T cell, are types of white blood cells, essential for the immune system. T cells originate in the…

Q: How do T cells reach the CNS of healthy individuals?

A: Question -  How do T cells reach the CNS of healthy individuals?

Q: What is Helper T cells?

A: Step 1 The immune system has two types of about trillion lymphocyte cells, called B-lymphocytes and…

Q: What are the roles of helper T cells?

A: Majority of the lymphocytes circulating in the blood are made up of T lymphocytes involved in the…

Q: In addition to cells infected by microbes, what other types of target cells are attacked by…

A: Lymphocytes are the types of WBC (white blood cells) that are located in the immune system of the…

Q: how do antibodies become specific for a given antigen ?

A: A type of white blood cell called a lymphocyte recognises the antigen as being foreign and produces…

Q: Describe the primary functions of helper T cells and cytotoxic T cells.

A: The immune system is responsible for clearing any infectious particle from the body by the…

Q: How are T cells aff ected by aging?

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

Q: Where do B cells acquire immunocompetence? Where do T cells do so?

A: B -cells acquire immunocompetence in Bone Marrow and T-cells acquire immunocompetence in Thymus.

Q: What is the role of helper T-cells ?

A: In immunology, the term helper T cell, which is also known as the CD4-positive cell, is used to…

Q: Describe some ways in which cytotoxic T cells destroytarget cells.

A: Answer- There are many different types of the T- lymphocytes. One of them is Cytotoxic T cells. They…

Q: What is the difference between a T-cell-dependent and T-cell- independent response?

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

Q: What is an antigen-presenting cell? By which mechanism do the “present” antigens?

A: Antigen-presenting cells (APCs) are essential for the initiation and maintenance of adaptive immune…

Q: How do cytokine barrier provide innate immunity in human ?

A: Introduction :- Immunity that is innate, or nonspecific, is a protective system that you were born…

Q: How are B cells activated?

A: Blood is a body fluid in humans and other animals. It delivers necessary substances such as oxygen…

Q: How do large antigens interact with antibodies?

A: Antigens are substances that activate the immune system of the body. Antibodies are antigen-binding…

Q: How do cytotoxic T cells destroy cells bearing foreign antigens?

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

Q: hy is the destruction of helper T cells caused by HIV infection so crippling to adaptive immunity?

A: Human Immunodeficiency Virus (HIV) is a virus that attacks the body’s immune system. If HIV is not…

Q: What role do cytotoxic T cells play in fighting infection?

A: A cytotoxic T cell is a T lymphocyte that kills cancer cells or cells infected/ damaged in other…

Q: What is the difference between T cells and B cells?

A: Immune cells are the defense cells that protect the body from infective agents. The cells of the…

Q: What is involved in the four categories of B-cell and T-cell mediated hypersensitivities?

A: There are four states of hypersensitivity. State I is characterized by immediate allergies that are…

Q: How do cytokine barriers provide innate immunity in humans ?

A: Cytokine is a term used for any low molecular weight soluble protein or glycoprotein released by one…

Q: What do T cell receptors do and tell How many T cell receptors do T cells have?

A: Lymphocytes are the white blood cells, which also act as the main type of immune cell in an…

Q: What is the role of B and T memory cells?

A: B and T cells together becomes memory cells.

Q: How do Cytotoxic T cells "kill" infected cells?

A: Lymphocytes are a kind of white blood cells that are major immune cells in the body. Lymphocytes are…

Q: Why are CD8+/αβT-cells important? Explain the function of the mature activated CD8+/αβT-cell and…

A: White blood cells also called leukocytes, are the cells of the immune system that are involved in…

Q: Howdo positive selection and negative selection contribute to thedevelopment of tolerance in T…

A: The immune system of the body protects the individual from the attack of pathogens or external…

Q: On which cell type is the T-cell receptor located?

A: Immune system is system which helps our body to fight against the foreign substances which will…

Q: How does the specificity of innate and adaptive immunity differ?

A: Introduction : Immunity: Multicellular Organisms' Ability To Resist Dangerous Germs Is Known As…

Q: What Are The Forces That Are Responsible For Antigen-antibody Reactions?

A: The antigen-antibody reaction is employed in laboratory settings for diagnosis of blood grouping…

Q: An epitope associates with which part of an antigen receptor?

A:

Q: What are the different types of T cells, and what function does each have?

A: Introduction :- T cells are produced by stem cells in the bone marrow and are a component of the…

Q: How Antigen Is Presented to T Cells?

A: T cell, also known as T lymphocyte, is a kind of leukocyte (white blood cell) that plays an…

Q: Describe the T cell response?

A: T cell responses are an important part of the immune system. T cells get activated when antigen is…

Q: How is a cytotoxic T cell like a natural killer (NK) cell?How are they different?

A: The immune system of the body protects the body from foreign invaders. It protects the body from any…

Q: How agranulocytes help in antibody formation?

A: Agranular cells are noted by the absence of granules in their cytoplasm, which distinguishes them…

Q: Which type of T cell participates in both cell-mediated and antibody-mediated immune responses?

A: Acquired immunity, is capable of recognizing, selecting and eliminating specific foreign antigens.…

Q: How can an extracellular bacterium and an intracellular virus independently be targeted by a…

A: Cytotoxic T cells and Helper T cells  provide protection against differen types of pathoges.…

Q: What are three different ways antibodies protect against infectious agents?

A: Antibodies, also known as immunoglobulins, are large, Y-shaped proteins produced by the immune…

Q: What is the purpose of T-cell secretion of cytokines?

A: Lymphocytes are immune cells present in the blood. There are two types of lymphocytes; B cells/ B…

Q: What molecules are MHCI and MHCII associated with on the T cell respectively

A: Major histocompatibility complex molecules helps in activation of T cells and helps in mechanism of…

Immunology

Immunology is the division of science involved with the immune reactions occurring in living organisms. The organisms are accustomed to evolving internal defense mechanisms to evade the invasion of microbial pathogens. Diverse cells are connected with stimulating the immune responses, which produce inhospitable conditions to the microbes prompting their lysis and thus inhibits the multiplication of the pathogens. The immune system can distinguish the pathogens through the aid of cellular intercommunication and launch responses to destroy them.