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The answer are the white blood cells, they are what the body uses to fight off foreign bodies and phagocytic is a word derived from the greek's phag meaning devour and cytic is biological for cell. i hope this helped!
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What is dermal interstitial histiocytic infiltrate?
When the skin is infiltrated by lymphocytes and histiocytes (activated macrophages). These are immune cells (white blood cells) that act in response to defend the body from disease by killing pathogens, unrecognised/foreign bodies and tumor cells. A lymphohistiocytic infiltrate is often seen in eczema.
Why does a sperm doesn't act as foreign to induce immune response?
Sometimes the sperm does induce an immune response - some infertility problems are caused by women having anti-sperm antibodies which kill the sperm before it has the opportunity to fertilise the ova.
Helper or suppressor cells are types of?
A T cell that reduces, or suppresses, the immune response of B cells, or of other T cells, to an antigen.Wikipedia: regulatory T cellRegulatory T cells (sometimes known as suppressor T cells) are a specialized subpopulation of T cells that act to suppress activation of the immune system and thereby maintain immune system homeostasis and tolerance to self-antigens. The existence of a dedicated population of supressive T cells was the subject of significant controversy among immunologists for many years. However, recent advances in the molecular characterization of this cell population have firmly established their existence and their critical role in the vertebrate immune system. Interest in regulatory T cells has been heightened by evidence from experimental mouse models demonstrating that the immunosuppressive potential of these cells can be harnessed therapeutically to treat autoimmune diseases and facilitate transplantation tolerance or specifically eliminated to potentiate cancer immunotherapy.
How do phagocytes protect against pathogens?
Activated by lymphocytes, Polymorph phagocytes absorb or envelope mostly bacteria, compartmentalize it, barrage it with enzymes attempting to destroy it, or radically alter it. Macrophages injest and destroy a wider variety of invaders, including viruses, and act as anitgen presenting cells which serve to increase immune response. Some epithelial and reticular cells also act as phagocytes in that the can injest and destroy or remove invaders.
Why do all molecules which have the property of antigenicity do not have the property of immunogenicity?
Because we know that all molecules that act as antigens produce an antibody so they have a property of antigenicity but not all give the immune response.
What act as intracellular signals to begin the immune response?
Cytokines
How do cytokines help in biotechnology?
Cytokines, also known as immune factors, are protein produced naturally by the cells and organs of the human immune system. They act on other immune system cells modulating the body's response to disease and infection. Cytokines can also regulate the growth of new blood cells in the bone marrow.Cytokines play a crucial role in the immune system response to all kinds of disease. They interact with organs and cells, alone and in combination with each other. The diverse role that cytokines serve in the immune system make them an ideal target for intervening or bolstering immune responses. Using recombinant DNA technology cytokines can be created in a laboratory. They have many treatment applications including cancer, multiple sclerosis, anaemia, and rheumatoid arthritis.
What is dermal interstitial histiocytic infiltrate?
When the skin is infiltrated by lymphocytes and histiocytes (activated macrophages). These are immune cells (white blood cells) that act in response to defend the body from disease by killing pathogens, unrecognised/foreign bodies and tumor cells. A lymphohistiocytic infiltrate is often seen in eczema.
What is antigene and antibody?
An antigen is a substance that can invoke an immune response. While an antibody is the immune system's response to an antigen. Antibodies, act by directly neutralizing the antigen and/or bind to the antigen and signaling marcophages to phagocytose the antigen.
How interferon drug work?
The exact molecular details of how interferons act is still unclear. They may make surface-exposed antigens of tumors even more capable of stimulating the immune system, which in turn would elicit a greater response from the T-cells of the immune system
What is the definition of the word cytokine?
A cytokine is a regulatory protein released by a cell in the immune system. Cytokines act as intercellular mediators when the body is generating an immune response.
Why does a sperm doesn't act as foreign to induce immune response?
Sometimes the sperm does induce an immune response - some infertility problems are caused by women having anti-sperm antibodies which kill the sperm before it has the opportunity to fertilise the ova.
What is the difference between specific and nonspecific defense?
Fever
What foreign substance elicits an immune response?
Any sort of "foreign" substance can, and most often will, elicit an immune response under certain curcumstances--provided the immune system is healthy. This would include bacteria, viruses and fungi. Related: An unhealthy, or compromised immune system can act in all sorts of undesirable ways, ranging from low response to threat or injury to actually creating antibodies to attack its own system or other organs and tissue.
What is the role of memory cells in providing acquired immunity?
The idea of immunisation is that you expose the immune system to the pathogen, ennabling it to recognise the pathogen and produce mature memory Helper T cells. This means that upon its second exposure the immune system is activated faster and more efficiently, allowing the immune system to kill off the pathogen quicker. In some cases antibodies are produced that can neutralise toxins, preventing their damaging effects. If memory T cells were not produced then the immune system would have to re-learn how to fight a pathogen every time.
Corticosteroids act on the immune system to treat?
Corticosteroids act on the immune system to:
Helper or suppressor cells are types of?
A T cell that reduces, or suppresses, the immune response of B cells, or of other T cells, to an antigen.Wikipedia: regulatory T cellRegulatory T cells (sometimes known as suppressor T cells) are a specialized subpopulation of T cells that act to suppress activation of the immune system and thereby maintain immune system homeostasis and tolerance to self-antigens. The existence of a dedicated population of supressive T cells was the subject of significant controversy among immunologists for many years. However, recent advances in the molecular characterization of this cell population have firmly established their existence and their critical role in the vertebrate immune system. Interest in regulatory T cells has been heightened by evidence from experimental mouse models demonstrating that the immunosuppressive potential of these cells can be harnessed therapeutically to treat autoimmune diseases and facilitate transplantation tolerance or specifically eliminated to potentiate cancer immunotherapy.
