What are the functions of CD4 and CD8 proteins on the surface of T cells?

Q: What are the components of innate immunity?

A: The innate immune system comprises of the barriers that aids to keep viruses, bacteria and other…

Q: Under what circumstances is having a fever beneficial? Under what circumstances is having a fever…

A: FEVER It is the condition of an increased body temperature which is not a disease but a symptom.  B…

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: How can an extracellular bacterium be targeted by a particular T cell response? Describe the…

A: T cells (also called T lymphocytes) are one of the major components of the adaptive immune system.…

Q: What body structure is the site of T cell maturation?

A: T cells are also known as T lymphocytes are a type of white blood cells which are essential for…

Q: contrast cytotoxic T cells and NK cells

A: Natural killer cells (NKC) and cytotoxic T cells are two different lineages of immune cells that…

Q: In the absence of thymus, where does the maturation of t cells occur ?

A: B lymphocytes and T lymphocytes are two important immune cells that take part in acquired immunity…

Q: What is the role of Role of NK Cells?

A: A lymphocyte is a kind of white blood cell which is found in immune system of…

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: In what process is clonal selection important?a. Complement function c. Inflammationb. B cell…

A: Clonal selection is a process that explains how a single B or T cell that recognizes an antigen…

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 are the stages of development and the functions of B cells and T cells, whose failure causes…

A: Hindrance in the development of cells leads to apoptosis and destruction of cells. It is studied…

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 the activation signal for NK cells? How doesthis differ from the activity of T-cytotoxic…

A: Introduction: Natural killer cells are lymphocytes of the same family as T and B cells. They are…

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 is T-cell receptor (TCR) ? How it works ?

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

Q: How is the newly emerging repertoire of T cells, with their diverse pre-TCRs, further differentiated…

A: T-cell has a receptor on its outer surface known as a T-Cell Receptor (TCR). T cell originates from…

Q: What is MHC?  List the specific cells that have MHC presentation and describe their role in the…

A: A sequence of genes that code for cell surface proteins that regulate the adaptive immune response…

Q: Can host-cell defense molecules be mobilized by drugs to fight infection?

A: Defense mechanism in a human body is divided into two main categories: Innate (the defense mechanism…

Q: Why are the immunities involving T cells called cell-mediated?

A: There are two types of acquired immune response namely,(a) Antibody mediated response(b) Cell…

Q: Explain the T cell clonal selection ?

A: The helper T cells or TH cells are the type of T cells that have a role in the adaptive immune…

Q: Many cells in the human body have proteins on the surface that are able to interact with the…

A: Introduction  Autoimmunity is defined as the inability of the body to distinguish between self and…

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 is the role of B and T memory cells?

A: B and T cells together becomes memory cells.

Q: What is the role of the primary lymphoid organ in adaptive immunity?

A: The body has special organs and mechanisms that aid in the defense against infection-causing agents;…

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: The T cell response follows the antibody-mediated B cell immunity.  What is the connection between…

A: SARS Cov 2 is the virus which cause Corona infections . The body have its own mechanism to fight…

Q: What are the functions of Defense proteins?

A: Proteins are the polymers of amino acids joined by peptide bonds.

Q: How does a single MHC protein present many differentpeptides to T cells?

A: To identify foreign substance or infectious agents a group of cell surface proteins plays vital role…

Q: Describe the types and functions of T cells

A: Immunity is dependent on the types of cells produced by the immune system of the body. There are a…

Q: List in points the main steps of T-cell production and maturation?

A: main steps of T-cell production and maturation:

Q: What techniques and methods are used to detect T cell signaling defects in a patient?

A: There are several techniques to detect T-cell signaling defects in patients. Some of them are as…

Q: Which of the following describes the developmental pathway for T cells? a. thymus → bone marrow →…

A: A type of leukocyte that plays an important role in the immune system refers to the T cell. T cells,…

Q: Which type of T cell is most important in both cellular and humoral immunity? Why?

A: T cells or T lymphocytes are a sub population of lymphocytes that are produced in the bone marrow…

Q: In general, what are consequences of activation of the TH1 arm of the immune response? Activation of…

A: Cell mediated immunity and allergic responses are biological effects that are mediated by cytokines.…

Q: What distinguishes MHC I from MHC II? a-aquisition of antigenic peptide in the cytoplasm…

A: MHC I and MHC II   Major histocompatibility complex Class I and Class II proteins help in providing…

Q: hat is the role of B cells?

A: Lymphocytes are white blood cells that also function as immune cells in the body. They are produced…

Q: What is clonal selection?

A: In the human body, the antibodies along with the other immune cells help to fight against foreign…

Q: What is the role of T cell, B cells, and Natural killer cells in the function of the Immune system?

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

Q: Why Naïve (Verigin ) B or T-cells have a short life span ?

A: Till these cells encounter and acknowledge an antigen-presenting cell (APC) and differentiate into…

Q: How do superantigens differ from conventionalantigens in terms of initial T cell activation and…

A: The immune system plays a principal role in fighting with the antigens that enter in the body by…

Q: What are the functions of Cytotoxic T cell markers?

A: T lymphocytes are the important cells in the cell-mediated immune response. There are different…

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…

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.