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On human cells MHC molecules are used to identify cancerous cells.
On bacterial cells things like LPS and various surface proteins are identified as "foreign"
The problem with this is that not all molecules that are used to identify "friend or foe" are attached to the surface. Things like non-methylated CpG, LPS, peptidoglycan and dsRNA all activate PRRs in cells, leading to an immune response. If you want a more comprehensive answer please contact me.
Wiki User
∙ 11y ago
Wiki User
∙ 12y agoThere are a variety of receptor proteins sticking out of the phospholipid bilayer which distinguish different cells.
Wiki User
∙ 9y agoAllorecognition is the ability of an individual organism to distinguish its own tissues from those of another. These are glycoproteins imbedded in the cell membranes.
Wiki User
∙ 11y agoantigen
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What is Tc cells?
Tc cells are cytotoxic cells that are "effetors" of cellular immunity that carry out the attack on a foreign cells in other words Tc cells kill cells that have been infected by a foreign substance
How do cells involved in the innate immune response detect the presence of pathogens?
Leukocytes recognize unique molecules on pathogens
How does the body know which cells to attack?
The body's immune system is able to distinguish between self and non-self cells through various mechanisms. One such mechanism is the presence of major histocompatibility complex (MHC) molecules on the surface of cells, which helps the immune system recognize self-cells. Non-self cells, such as infected or cancerous cells, may display abnormal proteins or antigens that are recognized as foreign by the immune system, prompting an immune response to attack and eliminate them.
How does your body know which cells to attack?
1. Your immune system can recognize cells based on the proteins present on the surface of cells. Viruses, bacteria, and other foreign cells are recognized as being different from your own cells and are attacked by your immune system.
What are B cells plasma cells and antibodies a part of?
Humoral immunity
How do phagocytes recognize foreign cells or bacteria?
Lymphocytes are part of the human body's innate immune system. Natural killer cells seek out and destroy foreign cells by distinguishing surface molecules of major histocompatibility complex class.
What is Tc cells?
Tc cells are cytotoxic cells that are "effetors" of cellular immunity that carry out the attack on a foreign cells in other words Tc cells kill cells that have been infected by a foreign substance
What is isoimmunity?
The ability to gain( from another individual of the same species ) immunity from foreign cells.
What does it mean to have nonspecific innate immunity?
The cells of the innate system recognize and respond to the pathogens in a specific generic way.
What is the special role of the tonsils the spleen?
Tonsils are the immune systems first-line of defense against inhaled pathogens. They produce T-cells, a type of white blood cell that aids in immunity. The spleen helps with immunity by purifying the blood and helps the immune system recognize and attack foreign antibodies.
Does mhc recognize bacteria?
MHC doesn't "recognize" bacteria or anything. It's job is simply take up the broken peptides. These peptides can be originally from a virus, bacteria, or from the cell itself (self). It will take these antigen that it can bind to and bring it to the cells surface. Your adaptive immunity cells (B and T cells) job is to "see" what the MHC has to offer and identify it as self (leave alone) or as foreign (need to destroy).
When an antigen is detected several types of cells work together to recognize and respond to it These cells trigger the lymphocytes to produce antibodies This process is known as?
Humoral immunity
What needs to form antibodies?
antibodies-part of humoral immunity involving B cells are formed in response to a foreign antigen by plasma cells
Do b cells destroy cancer cells?
No, cancer cells express self antigens, so your body cannot recognize it as foreign or dangerous.
What produces antibodies that are use to fight infections?
B cells, or B-lymphocytes. They are a type of specialized white blood cell that functions in your immune system in what is called antibody-mediated immunity. They learn how to recognize foreign invaders and tell other immune system cells, like T cells, or T-lymphocytes, to go and destroy them.
What is the definition of self and non self recognition in immunity?
Self recognition immunity is when something goes into the body and it has been there before. The body automatically puts a marker specific to only that substance on it so that anytime it is in contact with the body it will recognize it. Non-recognized immunity is when a foreign substance enters the body. In this case the body has defense teams designed to attack and rid the body of the foreign substance. Sometimes the cells that are supposed to recognize the markers fail to and the body attacks it's own recognied substances. When this happens, this is the cause of many autoimmune diseases such as systemic lupus erythematosus, multiple sclerosis. OMG
What is tcs?
Tc cells are cytotoxic cells that are "effetors" of cellular immunity that carry out the attack on a foreign cells in other words Tc cells kill cells that have been infected by a foreign substance
