Progression from early-stage HIV disease to AIDS can beexpected within a few months:(a) In nearly all untreated patients(b) If symptoms of diarrhea and fever are present(c) When the helper T cell count drops to less than 100 perμl of blood(d) When the level of virus in the bloodstream begins torise

Q: Antigen is injected through vaccination into the same site as a previous injection of that same…

A: Antigen antibody complex  This is an immune complex also called antigen bound antibody that is…

Q: Name the different components (a-g) and functions of the Ebola virus shown below. Please write the…

A:

Q: Explain the typical immunophenotypic features of peripheral B cells in: (i) X-linked…

A:

Q: Explain the following statement: "Both bacteria and viruses can use similar mechanisms to evade the…

A: The immune system is the bodys defense against pathogens such as bacteria & viruses. Bacteria…

Q: The immune system of a person is supressed. He was found positive for a pathogen in the diagnostic…

A: ELISA refers to the enzyme-linked immunosorbent assay. It is a plate-based assay technique and is…

Q: B lymphocytes, the precursors of plasma cells, are triggered to proliferate by the binding of…

A: B-cell is a type of lymphocyte which is involved in the humoral immune response in the body. B-cell…

Q: To become a fully activated, antibody-secreting cell, B cellsusually need:(a) To encounter an…

A: Differentiation of B cells is important for the completion of the adaptive immune response. It is…

Q: Emil has fallen and scratched a wound on his knee. After a while, the knee swells and aches at the…

A: The entire activity of the immune system in tackling infection is depicted in the figure given.

Q: 16. Which cell type is derived from myeloid progenitors? A). Tc cell B). TH cell C). B cell D). Mast…

A: The development of blood cells starts with stem cells, which are unspecialized cells that can give…

Q: DiGeorge syndrome is the result of the absence or immaturity of the thymus gland at birth. This…

A: The immune system of the body consists of immune cells which is responsible for removing the foreign…

Q: B) Complement system activation and elimination of a bacterial pathogen "Map the activation of the…

A: The complement system is a part of the body's defence system that enhances the ability of antibodies…

Q: The graph in Figure 3 represents the information complied over a 10-year period showing the…

A: HIV destroys CD4 cells by using their replication machinery to create new copies of the virus. This…

Q: 8 of 145 Ź H 8. A27-year-old man comes to the physician 2 weeks after noticing a scrotal (lump…

A: The objective of the question is to identify the group of lymph nodes that would first intercept…

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: Using the letters from column B, match the cell description in column A. (Note that all require more…

A: Different immune cells are involved in mediating protection to the host against the pathogen. There…

Q: Compare and contrast the morphology of the tissue slides of tonsils and the infant thymus. (i)…

A: Introduction :- Tonsils are a group of lymphoid tissues located in the back of the throat, at the…

Q: Injections into the heel of a girl (whose blisters were licked by a rabies-infected kitten) to…

A: Our body has own system to fight against pathogen. There are different barriers such as physical…

Q: Roundworms or 'filarial nematodes' can enter either the lymphatics or blood vessels. You would…

A: Filariasis is a disease that is mainly caused by the parasite Wuchereria bancrofti. Human is the…

Q: Explain the mechanism by which (A) macrophages and NK cells, and (B) macrophages and effector T…

A: Macrophages are the specialized cells that are involved in the process of detection, phagocytosis,…

Q: i) Describe the above process. II) Why do O and P have different pathways for antigen processing…

A: introduction The adaptive, or acquired, immune reaction takes days or maybe weeks to become…

Q: What factors lead to a comprised immune system with HIV? Group of answer choices A)High viral load…

A: HIV (Human Immunodeficiency Virus) is a virus that attacks the immune system. (The immune system…

Q: Although you might consider this image to be a histology image of a tonsil, you would not identify…

A: Tonsils are the masses of lymphoid tissues that may be either encapsulated or non-encapsulated.…

Q: Past paper

A: (a) A complicated interaction of multiple immunological variables causes the concurrent rise in…

Q: A person with AIDS will probably:(a) Not make antibody(b) Make a response to T-dependent antigens(c)…

A: AIDS stands for Acquired Immuno Deficiency Syndrome. It is a viral disease caused by Human Immuno…

Q: Which event happens last in a humoral immune response? 1) CD4 T cell activation 2) presentation of…

A: The correct option is (d) the production of antibodies.

Q: Neutrophils are best described as: (a) Phagocytic, have bilobed nucleus and are small (2-5 microns)…

A: Introduction: Phagocytes are white blood cells that assist begin an immune response and safeguard…

Q: Explain why the B cells response is described as “humoral”, but the T cell’s response is described…

A: Both B cells and T cells are lymphocytes that are gotten from explicit sorts of foundational…

Q: Contrast the structure of a B cell with that of a plasma cell, and explain how their structural…

A: B cells also called the B lymphocytes are kind of the white blood cells subtype. They play an…

Q: Point out TWO (2) type of infections that may cause the lymph nodes to swell.

A: Lymph nodes, lymph, and vessels make up the lymphatic system in the body. The lymph vessels are a…

Q: . Select the cell types that belong to the myeloid lineage. (more than one answer)  NK cells…

A: Immune system in the body consist of widely distrobuted cells which recognise foreign substances and…

Q: An infant appears healthy until about 9 months of age, when he develops severe bacterial infections,…

A: Immune system:-Body's defense against infections-The immune system helps in fighting against germs…

Q: u are an emergency room physician. Marcus, a 7-year-old boy, has just presented in the ER…

A: Chest pain can be due to a variety of causes such as:  Muscle strain Peptic ulcers Asthma Lung…

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: According to the Center for Disease Control (CDC) annual report issued last year, approximately one…

A: The lymphatic system consists of a set of organs that are a part of the immune system, and they are…

Q: 1. ___ , including mast cells, eosinophils, basophils, and ___ , respond to multiple extracellular…

A: When the immune system is weakened or compromised, it is less effective at protecting the body, and…

Q: All of the following are true of antigen-presenting cells (APCS) EXCEPT: APCs process antigens from…

A: Introduction :- Antigen-presenting cells (APCs) are immune cells that play a crucial role in…

Q: Explain the typical immunophenotypic features of peripheral B cells in: (i) X-linked…

A: X-linked agammaglobulinemia  also called XLA - is an inherited (genetic) immune system disorder that…

Q: Immune system of humans     a) Secreted B cell receptors can function as opsonins.   b) MHC class II…

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

Q: 1 Write essay Demonstrate the homeostasis involved to maintain the system functions a) at least two…

A: Every organism possesses a mechanism for maintaining homeostasis which is a process in which the…

Q: If a person is given a transfusion with the wrong blood type, what mechanism of action is…

A:

Q: A 19 -year old man comes to the physician because of a severely itchy, blistering rash on his legs…

A: An extremely itchy, blistering rash that has been on the patient's legs for two days brings a…

Q: Plasma cells are which type of lymphocyte? Explain, No more than 3-6 sentences. A). T cells B). B…

A: Plasma cells are which type of lymphocyte?  Answer is B Cells.

Q: you need a flu shot every year/season because (HA-haemoagglutinin; NA-neuroaminidase) A) the virus…

A: The viruses are constantly changing. So to keep yourself protected it is utmost important to get…

Q: It sometimes is difficult to distinguish the different lymphoid organs from one another in…

A: The lymphatic system is a network of tissues and organs that offer assistance to get rid of the body…