In this figure, the rapid rise in Ab titer after second exposure to the same Ag is possible because of: 1st Ag Exposure 7 IgM IgG 14 Time (days) 2nd Ag Exposure 21 58 65 72 Eosinophilic granulocytes Cytotoxic T cells specific for the Ag Presence of memory B cells specific for the Ag None of the other four answers are correct Plasma cells that live many years

Q: Cells from mouse spleen were fixed and stain with CD4, which is found on T cells. Are the lighter…

A: In this scenario, cells from a mouse spleen are stained with an antibody targeting CD4, a protein…

Q: As the thymus atrophies, you would expect to see an immediate decrease in the number of...? B cells…

A: The thymus gland is a small organ that lies in the chest behind the breastbone and in front of the…

Q: Immature B-cells express only IgM on its membrane, and if it encounters antigen the IgM will be…

A: Switch Recombination:- It is a process in immune system where B-cells changes the class of…

Q: None

A: Refer to the solution

Q: hypersensitivity reactions

A: Responses to antigens that result in exaggerated immune reactions, leading to tissue damage or other…

Q: Match the term with its correct description Long, flexible molecule expressed on B-cells,…

A: B cells These are lymphocytes that are involved in the humoral immunity constituent of the adaptive…

Q: Nursing care of a patient with acquired immune deficiency syndrome (AIDS) includes monitoring of…

A: Acquired immunodeficiency syndrome (AIDS), is caused by the Human immunodeficiency virus (HIV). HIV…

Q: Cellular immunity develops from a single stem cell called the multipotent hematopoietic stem cell.…

A: Together, innate and adaptive immunity offer complete defense against a variety of health risks to…

Q: This type of cell recognizes a specific antigen displayed by a macrophage and notifies the B-cells…

A: Immune system is responsible for protecting the body against the pathogens.

Q: Compared to Type III hypersensitivities, reactions primarily involve -cell activity. Type IV…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: Long-lived memory cells provide immunologic memory Reexposure to same antigen Secondary immune…

A: Approach to solving the question:  Detailed explanation: Examples: Key references:

Q: T cell phenotype found around blood vessels in post-mortem analyses of the human brain is- Treg CD8+…

A: The central nervous system (CNS) is classically viewed as immune-privileged; however, recent…

Q: Experimental autoimmune encephalomyelitis (EAE) is a mouse model of the human diseaseMULTIPLE…

A: T cells enter the central nervous system by transporting across the endothelial blood-brain barrier…

Q: Describe the interaction between a dendritic cell and a helper T cell that can recognize an Ebola…

A: Antigens are foreign elements that stimulate the production of antibodies by activation of the…

Q: Match the following cells to their description. Lymphocyte that acts by secreting molecules that…

A: Blood is a type of connective tissue. It consists of cells (formed elements) that are suspended in…

Q: A mouse is infected with staphylococcal bacteria through a laceration in the skin of its paw.…

A: Dendritic cells are important immune system regulators. They act as a bridge between the innate and…

Q: List key mechanisms that allow an individual to potentially generate a repertoire (collection) of B…

A: The immune system of our body may produce a large number of B cells that can recognize a wide…

Q: Which of the following are true of lymph nodes? (More than one answer may apply). Checkpoint for…

A: The immune system is the organ system of the body that is principally accountable for protecting the…

Q: What will be the direct result of the interaction shown in this figure? CD4 TCR CD28 Epitope CD80…

A: The adaptive immune system is a specific defense mechanism that recognizes a foreign antigen or…

Q: T-cell receptor 8-chain gene CD3 complex CD8 CD4 beta-2 microglobulin Drag answer here Drag answer…

A: Introduction MHC is the Major Histocompatibility Complex that encodes various genes which are…

Q: Match the best choice of information about immunoglobulliins with the IG match The answer options…

A: Immunoglobulin are antibody molecules which are made up of carbohydrates and proteins. They are main…

Q: Antibodies can bind specific antigens on ___, allowing for ___ by phagocytes like ___. Group of…

A: the correct answer is in next step.

Q: Which of the following is not involved in specific immunity O Plasma cell O B cell O Neutrophil…

A: Introduction: Immunity is referred to as the host's resistance against any foreign antigen,…

Q: The absence of _______ at birth will affect the maturation of T cells.     D     C     B     A…

A: Lymphatic system is composed of lymph, lymphatic organs and lymphatic vessels. Spleen, thymus, lymph…

Q: Which of the following characteristics apply to this white blood cell 1.  # 4 in frequency 2.  may…

A: White blood cells are part of the immune system and respond to invasion of body by a pathogen or…

Q: Allergic reactions to penicillins are considered a/an hypersensitivity. T-cell-mediated O…

A: Hypersensitivity is a condition in which the normally protective immune system has harmful effect on…

Q: Why does exposure to chickenpox virus confers lifetime immunity? helper T cells do not activate B…

A: While interacting with virus the body produces two types of cells one that fight with the disease…

Q: A killer T-cell is an antibody producing plasma cell. O True O False

A: Immune cells are involved in protecting the body against pathogen.

Q: What is the rate-limiting step that causes the death of approximately 50% of transitional B cells…

A: B cells or B lymphocytes are important players in the adaptive immune response that is responsible…

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…

Viral Infections

Viruses are abundantly found, minute entities that have genetic material enclosed within a protein coat. The proteinaceous material enclosing the genetic material of the virus is called a capsid. The genetic material could be either DNA (deoxyribonucleic acid) or RNA (ribonucleic acid). A virus is too minute to be looked at with naked eyes and therefore visualized with the help of a microscope. They are acellular entities that require a host for processes, such as replication, transcription, translation and multiplication. Plants, animals, and bacteria act as host wherein the virus reproduce. Viruses cannot multiply outside the host's body and thus are considered nonliving outside the host body.