Name two possible functions of CD8a+ dendritic cells that could account for the results seen in the Batf3-/- mice immunized with WNV.

Q: Which of the following are characteristics of FceRI? Choose all that apply.     A. They bind very…

A: The immune system uses a large Y-shaped protein as an antibody. This protein is also called…

Q: To avoid the potential for activating self-reactive T cells that might cause autoimmunity, naive T…

A: According to the question, we have to name two effector T cell functions that would fail if effector…

Q: Describe the steps for immunoglobulin heavy chain class switching from IgM to IgG. Are the events…

A: Immunoglobulin class switching, also known as isotype switching, isotypic commutation, or…

Q: 'Gamma-delta' T cells differ from 'alpha-beta' T cells by all of the following except O alpha-beta…

A: 'Gamma-delta' T cells differ from 'alpha-beta' T cells by all of the following except A. alpha-beta…

Q: B cells and dendritic cells are both capable of antigen presentation via MHC molecules. What are the…

A: Major histocompatibility complex molecules are the surface proteins that help in identifying self…

Q: One striking feature of TCR interactions with peptide:MHC complexes is that amino acid residues in…

A: A critical stage in T cell activation is the association of the TCR and antigenic peptide in complex…

Q: For immunoglobulin heavy and light chain genes, and for T-cell receptor b chain genes, there are a…

A: The T-cell receptors are present on the surface of the T-cells also known as T-lymphocytes. They…

Q: At first glance, it would seem a dangerous strategyfor the thymus to actively promote the survival,…

A: Major histocompatibility complicated (MHC), cluster of genes that code for proteins found on the…

Q: Three major cell types, dendritic cells, macrophages, and B cells, present peptides bound to MHC…

A: In the human body, the resistance against the entry of any foreign particle or antigens is executed…

Q: Features of immunoglobulins include all of the following, EXCEPT,      All immunoglobulins'…

A: These are glycoprotein molecules produced by plasma cells. They act as a critical part of immune…

Q: What immune response would a mild breakthrough infection by the Omicron-variant SARS-CoV- 2 most…

A: ANSWER) (a) Only T-cells will be stimulated

Q: What is the explanation for the results in Rows 1–4 of the table?. Why does the T cell response to…

A: T lymphocyte is a kind of leukocyte (white blood cell) that plays an important role in the immune…

Q: B-cell tumors originate during different developmental stages of B cells during their maturation in…

A: B cells are also termed B lymphocytes, they are known as white blood cells of the lymphocyte…

Q: To study the immune responses that provide protection against tumor growth in mice, some…

A: Cytokines are immunological molecules present in biological systems that are important for cell…

Q: What results would be predicted if experiments were performed to examine the CD4 T cell responses to…

A: The antibodies are produced by B-lymphocytes in response to antigens. These antigens can be…

Q: When T cells are activated by recognizing peptide:MHC complexes on dendritic cells in the lymph…

A: According to the question, here is a short description of the T cell activation process and brief…

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: CD8 T cells in a culture are analyzed for their ability to produce the cytokine IFN-g, and the…

A: T cells are the essential component of immune system. These are developed in the bone marrow and…

Q: shows the directed migration of two immune cell types, neutrophils (red) and macrophages (green) to…

A: introduction CMB is the study of cells and the macromolecules (DNA, RNA, protein, lipids,…

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: shows the directed migration of two immune cell types, neutrophils (red) and macrophages (green) to…

A: Immune cells are the sort of cells that emerge from stem cells in the bone marrow and mature into…

Q: B cells express a complement receptor that binds to C3b cleavage products, such as iC3b and C3dg.…

A: INTRODUCTION The complement system plays a crucial role in the innate defense against common…

Q: T cells and B cells have many similarities in how they produce their highly diverse repertoire of…

A: Somatic hypermutation (or SHM) is a biological mechanism by which the immune system adapts to new…

Q: Complexes of IgG bound to soluble multivalent antigens can activate the classical pathway on the…

A: Introduction :- One of three mechanisms that activate the complement system, a component of the…

Q: The T-cell receptor gene segments are arranged in a similar pattern to immunoglobulin gene segments…

A: Whereas both B cells and T cells play a role in eliciting an immune system response, the primary…

Q: In a mixed lymphocyte reaction, T cells from individual A make a robust response to…

A: Immunity is an organism's ability to defend against a particular disease or through the activation…

Q: Why is this ligand for the NK-cell receptor CD94:NKG2A. considered a broad mechanism for the NK-cell…

A: NKT cells exhibit a wide range of receptors and kill the infected body cells and tumor cells.

Q: Inhibitory receptors on lymphocytes down-regulate immune responses by recruiting protein or lipid…

A: B cells, also known as B lymphocytes, are part of adaptive immunity, which is antigen-specific and…

Q: Why is the concentration of this ligand for the NK-cell receptor CD94:NKG2A. on the target cell an…

A: The production of distinct activating as well as inhibitory receptors in a manner that stops the NK…

Q: True/False: B-cell receptors and T-cell receptors share a mechanism for generating diversity, and…

A: T cells and B cells play important roles in immune response. They recognize non-self antigens in the…

Q: Clonal selection therefore requires a mechanism for producing a great diversity of antibodies. How…

A: When the body encounters an antigen, the immune system actively produces a protein called…

Q: Briefly describe the effector functions and mediators of the following CD4 T lymphocyte subsets.…

A: When B cell presenting antigen through MHC class II molecule, TH Cell recognise it. T helper cell…

Q: Do these results rule in/out either of the two possible functions of CD8a+ dendritic cells indicated…

A: Immunology.

Q: Analysis of their lymph nodes revealed profound alterations in the normal architecture, with a lack…

A: Immunodeficient Immunodeficiency is defined as a state in which the ability of the immune system of…

Q: Suppose you have two A-B-type exotoxins, A-B and A’-B’. A-B binds specifically to all MHC-II cells…

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

Q: All of the following statements regarding immunoglobulin gene rearrangement are true except a.…

A: B-cells are a sort of lymphocyte (a kind of WBC) that creates antibodies in light of infections or…

Q: T cells and B cells have many similarities in how they produce their highly diverse repertoire of…

A: Somatic hypermutation (or SHM) is a biological mechanism by which the immune system adapts to new…

Q: Why would be the advantage of the system described for HCMV? In other words, why would decreasing…

A: Human cytomegalovirus (HCMV) or Human herpes virus 5(HH5) is an opportunistic beta-herpesvirus that…

Q: Some viruses have mechanisms to down-regulate MHC class I protein expression on the surface of cells…

A: To maximize the probability of pathogenic organisms being transmitted to a fresh host a strategy is…

Q: A primary difference between how B cells recognize antigen and how T cells recognize antigen is that…

A: The immune system is responsible for fighting off infections caused by pathogens and serves as the…

Q: The Antigen receptor complex in both B cells and T cells is composed of multi-subunits. If you use…

A: The FC receptor is the part of the cell to which the antibody binds. These receptors are mainly…

Q: Which type of MHC-class molecule is found on all nucleated cells and is used to communicate with…

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

Q: The TNF family of cytokines and their receptors are critical for the development of secondary…

A: Lymph nodes, tonsils, Peyer's patches, spleen, adenoids, skin, and mucosa-associated lymphoid tissue…

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.…

Q: Where are major histocompatibility complex-I (MHC-I) molecules located in the human body (cells)?…

A: Major Histocompatibility Complex is a protein coded by the HLA gene. It is the part of the acquired…