Do T cells bear a cell-surface receptor capable of recognizing a specific antigen?

Q: IgM antibodies are much more efficient than IgG at activating the complement cascade. However, under…

A: IgG and IgM are types of antibodies produced by the immune system in response to an infection. The…

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: 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: Explain the multifaceted role of interferons as first responders to viral infection: What types of…

A: Introduction: - interferons usually belongs to the glycoproteins of low molecular weight. These…

Q: Could a TC cell induce apoptosis in a “self” cell that lost the ability to produce MHC class I…

A: The ability of the recipient's antigen-presenting cells to select up antigens in tissues and…

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

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

Q: Class II MHC proteins display what kind of antigens? What class of T cell recognizes antigens bound…

A: Introduction: The MHC (major histocompatibility complex) is a group of genes that encodes for a set…

Q: Which subtype of T cells is destroyed by the HIV virus?

A: HIV or the human immunodeficiency viruses is a type of Lentivirus (a subgroup of the retrovirus,…

Q: Which of the following is part of the T-cell clonal deletion process? a) T-cells are eliminated if…

A: T cell clonal deletion means deletion of B & T cells through the process of Apoptosis ( program…

Q: Describe the specific roles of helper, regulatory, and cytotoxic T cells in normal cellular…

A: T cell, are a type of leukocyte that are exclusive white blood cells that is an important part of…

Q: How does the thymus help the body avoid autoimmune responses? (A) By negatively selecting T cells…

A: The immune system is a complicated network of cells, tissues, and organs that work together to…

Q: Which of the following is NOT true of Innate Lymphoid Cells (ILCs)? A) Each ILC type responds to a…

A: Innate lymphoid cells are immune cells that mirror the phenotype and function of T cells. It…

Q: Are there other examples besides immune secretions in which a single substance may act as both an…

A: Immune cells secrete the secretions that protect body from immunity. In body three types of glands…

Q: What is an Antigen-presenting cell (APC)?

A: There are different kinds of cells for adaptive and humoral immune responses. These are studied…

Q: Describe the components of the innate immune response.  Describe the sequence of events when a…

A: The innate immune system is considered as the first line of defense, which helps to provide…

Q: Name all the ways that Helper T cells are responsible for immune response?

A: Phagocytosis is a vital process in the immune system and is primarily carried out by specialized…

Q: Name the 4 types of T cells and give the function of each one. (note: Suppressor T cell is also…

A: T cells are the lymphocytes and are of four main types: CD4+ helper cells, CD8+ cytotoxic cells,…

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: Where does the antigen binding region of a BCR and an antibody molecule occur?

A: The B cell receptor (BCR) is a protein on the surface of the B cell composed of membrane bound…

Q: What are the first and second signals in activation of a T cell?

A: The T cell which is also referred to as the T lymphocyte is one of the most crucial cells of the…

Q: Why regulatory T cells important?

A: T cells are the immune cell especially play vital role in adaptive immunity . Generally , T helper…

Q: How is long-lasting immunity achieved in cell-mediatedimmunity?

A: Human body has an extremely well developed immune system for the protection against pathogens. Human…

Q: Which proteins involved in the activation of T cells have the capacity for transduction without the…

A: For the activation of T-cell, there are three types of proteins which come into play:- MHC proteins…

Q: Which of the following T cells would survive education in the thymus? (a) one that recognizes…

A: T cells can sense the intracellular pathogen because the infected cells display surface peptide…

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: Which of the following best describes the sequence variation within class | MHC molecules? A)…

A: MHC stands for Major Histocompatibility Complex molecules. They are a type of cell surface proteins.…

Q: Which antibody type description among A-D is falsely characterized? A) OIGA: form dimers; prevent…

A: All antibodies are secreted by the B-cells.  Antibodies are classified into 5 main classes i.e IgG,…

Q: What are the components of acquired immunity?

A: Immunity refers to the ability of the organism to recognize and differentiate between the self and…

Q: Please could you explain how lymphocytes (especially B) can maintain receptors on their surfaces? Is…

A: Cell immunity

Q: What types of cells display MHC class I and class IIantigen complexes, and what happens as a result?

A: MHC or Major Histocompatibility complex is a locus present in the DNA of vertebrates. This locus has…

Q: What is a membrane histocompatibility complex? Contrast MHC I and MHC II.

A: The genes that code for cell surface proteins that aid the immune system in differentiating between…

Q: What are effector mechanisms of immunity?

A: The immune system has many types of cells and signaling molecules. The cells of the immune system…

Q: A flu-infected cell has down-regulated its MHC class I expression. The lymphocytes below comes to…

A: MHC class I molecules: These are cell surface recognition elements. These are expressed on virtually…

Q: If you had to choose between losing function of your B or T cells, which would you choose, and why?

A: INTRODUCTION B cells Type of lymphocytes that are responsible for humoral immunity. T cell This is a…

Q: Why do antibodies against cell surface antigens often produce pathological reactions while…

A: The antigen is the substance that are capable to stimulate the immune response of the body. They are…

Q: Name two ways in which the presence of antibodies enhances phagocytosis.

A: Antibodies are immune proteins that circulate in the bloodstream and identify and kill foreign…

Q: Of the following, which should NOT occur in order to facilitate T-cell selection in the thymus?…

A: T-cells are the part of immune system that kills the foreign pathogen in specific manner. It is…