____________interferon, produced by T lymphocytes, activates cellscalled _____________ and is involved in destroying viruses.a. Gamma, fibroblasts b. Beta, lymphocytes c. Alpha, natural killer cells d. Beta, fibroblasts

Q: Explain why each choice (a-d) is correct or incorrect. In clonal selection of B cells, which…

A: B cell expresses receptors ,that are specific to distinct antigen,  is determined before…

Q: How does HIV (human immunodeficiency virus) lead to AIDS (acquired immune deficiency syndrome)/lead…

A: Human immunodeficiency viruses causes AIDS.This is the condition where gradual failure of immune…

Q: Which two viruses mainly infect the lower respiratory tract? A.Rhinovirus and influenza virus…

A:

Q: T  ________cells assist in the functions of certain B cells and other Tcells.a. sensitized b.…

A: Immune responses is a specific reactivity induced in a host by an antigenic stimulus. It could be of…

Q: This chemical is released by virus-infected cells to decrease the spread of virus to nearby cells.…

A: Virus-infected cells release certain chemicals that work as immunity protection against viruses. It…

Q: E-cadherin expression is___________ in the ________________cells that are situated around the edges…

A: EMT is the epithelial- mesenchymal transition.  Cells needs cadherins adhesion to other cell.…

Q: Select the correct answer for each question.  Explain why each choice (a-d) is correct or incorrect.…

A: The immune system is essential for defending the body from infections and other harmful substances.…

Q: interferons: a. cause inflammation b. inhibit viral infection c. aid in phagocytosis d. decrease…

A: Introduction: There are various methods by which chemical mediators can start an immune response.…

Q: The acquired ability to prevent an unnecessary or destructive immune reaction to a harmless foreign…

A: Immune tolerance is significant for ordinary physiology. Central tolerance is the fundamental way…

Q: The third line of defense includes: a. inflammation b. stomach’s digestive acid c. phagocytes d. MHC…

A: Answer is d.)  MHC proteins.

Q: Systemic distribution of TNF-α in the blood circulation may cause _____. a. respiratory burst b.…

A: Tumor Necrosis Factor alpha (TNF alpha), is an inflammatory cytokine produced by…

Q: DiGeorge syndrome is a congenital disease that results in a poorly developed, nonfunctioning thymus…

A: Primary immunodeficiency are the immunodeficiency diseases which arises from the birth where as…

Q: Which of these offers a nonspecific defense against viral infection? a. Antibodies b. Leukotrienes…

A: There are some living organisms that cannot be observed by the naked eye and only can be seen under…

Q: The thymus is most active during a. Fetal development b. Childhood c. Middle age d. Old age

A: Thymus is primary lymphoid organ of the immune system. In the thymus, T cells (thymus cell…

Q: Rheumatoid arthritis is an ___________ that affects the ____________ .a. immunodeficiency disease,…

A: Immune system is system which helps our body to fight against the foreign substances which will…

Q: 3. Why is it difficult to create a vaccine for AIDS? a. the virus is too well hidden in the body b.…

A: DISCLAIMER: Since you have asked multiple questions, we have solved the first question for you. If…

Q: Type B blood contains______________ surface antigens on theRBCs and_______________ antibodies in the…

A: Introduction  The most common blood group system is ABO blood group system which consist of 3 blood…

Q: what cell provides cell mediated immunity a. monocytes b. b lymphocte c. cytotoxic t cells d.…

A: Cell-mediated immunity is one branch of adaptive immunity. Other branch of adaptive immunity is…

Q: Which condition is not an autoimmune disease?a. multiple sclerosis c. systemic lupus erythematosisb.…

A: The immune system is responsible for protecting the body from foreign pathogens. Immune system fight…

Q: The detrimental effects of Lupus erythematosis are initiated by A. activated T cells attacking…

A: Lupus erythematosus: It is an auto-immune disease, in which the human immune system kills its own…

Q: A drug that were to inhibit the activity of T suppressor cells would lead to _______. a.…

A: Regulatory T cells (Tregs) also known as supressor t cell are a specialized subpopulation of T cells…

Q: Read the article and then answers the following question.3. Why is it difficult to create a vaccine…

A: AIDS is a acquired immuno-deficiency syndrome caused by HIV virus and to make a vaccine against a…

Q: These two cells destroy an infected cell by releasing chemicals that cause apoptosis. a. NK cell and…

A: A series of certain molecular reactions might cause the death of a biological cell. This phenomenon…

Q: Which of the following are phagocytes? 1. Neutrophils II. Macrophages III. Natural killer cells

A: Phagocytes are a type of white blood cell that plays an important role in the body's immune system.…

Q: The immune system cell that binds to herpes infected cells and kills them are? A. Regulatory cells…

A: The immune system can be defined as the type of organ system which participates in protecting the…

Q: are cytolytic proteins that binds to target cell's plasma membrane to form pores. a. Chemokines b.…

A: The immune system is a network of cells and  proteins which form a various level of barrier to…

Q: Which cytokines will act on mast cells to cause degranulation and local inflammation? a. TNF-alpha…

A: Cytokines are an enormous group of peptides, proteins, or glycoproteins that are released by…

Q: Which pertains to the immune response of a woman who has just inhaled a coronavirus to which she has…

A: Corona virus are a group of RNA viruses which causes disease in mammals and birds. They usually…

Q: A heart attack is a type of organ dysfunction. Is heart attack a type of sepsis? A. No, because a…

A: Sepsis - It is defined as the response to infection. Any infection can cause sepsis if it is not…

Q: The single most important risk for skin cancer is a.genetics b.overexposure to UV radiation c.race…

A: We know that Cancer is a complex disease that involves unlimited cell division due to the loss of…

Q: Helper T cells produce _____________ t a. Enzymes b. Cytokines c. Antibodies d. Antigens

A: T lymphocytes (often called T cells) are one of the crucial types of lymphocytes and are a major…

Q: MHCII molecules will bind __________ and locate to the cell surface. a. T-independent type antigens…

A: T cells are not able to recognize free antigens directly. They can recognise only antigens that are…

Q: B cells proliferate and differentiate into plasma cells and memory cells in the ______________ of…

A: INTRODUCTION Secondary lymphoid organ This include spleen, lymph node and payers patches.

Q: Which cells of the immune system secrete antibodies? A. Natural killer cells only B. T cells only C.…

A: The immune system helps prevent the entry of foreign substances into the body. The immune system…

Q: Suppose a person recovers normally from viral infections, but then gets the same viral infections…

A: The B-lymphocytes or the B-cell and the the T-lymphocytes are t-cells are very important for the the…

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.