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Immune System
This category is for questions about how our bodies identify and fight off disease, infection or pathogens through specialized cells, tissues and organs. The system that does this is called the immune system. It produces antibodies which recognize intruders and neutralizes potentially pathogenic organisms or substances.
4,548 Questions
What would most likely elicit a response from the immune system?
Infections, cancer, foreign bodies, sometimes itself.
How does the body's immune system defend against invaders?
The immune system protects the body from infection by creating a barrier that prevents viruses and bacteria from entering the body. If the virus and bacteria enters the body, the immune system detects and eliminates them before they can reproduce.
Does each different blood type have a unique color?
No, there isn't any way to tell by looking at your blood what type it is. Blood type is determined by proteins on the cells, and you need a chemical test to tell which is which.
The process of immunity is to produce specific antibodies that bind to antigens on the surface of pathogens. =]
Who was the first to discover the immune system?
he was a drunk man who was on drugs he died of over dose of drugs his name was peter parker
When the antigens on erythrocytes bind with antibodies in the plasma?
Agglutination and eventual lysis of erythrocytes occurs.
How does the immune system protect your body?
Short Answer:
The immune system senses foreign cells in the body and destroys them.
Long Answer:
Destroying, say, the common cold, begins when an antibody marks one common cold cell. It does this by attaching to the membrane. Another immune system cell, the nature killer cell (yes, THAT is its professional name), will kill this cell, but basically take pieces of that cell and add it to its membrane (kind of how in a video game you take the sword of the villain you just defeated as a trophy)
The natural killer cell will then wander over to another immune cell, known as the helper T-cell.
The helper T-cell
sees the pieces of the foreign cell and freaks out (this process is call antigen recognition). The T-cell
is now considered "activated" and begins to replicate and differentiate itself.
As all this is happening, and T-cell
that runs into a B-cell
(another immune cell) activates it. The B-cell
also begins to replicate and differentiate itself. One of the B-cell
types created then release antibodies that will bind to the foreign invader (the common cold, in this case) to mark it as an enemy.
The antibodies
go out and mark the invader, and natural killer cells, and cytotoxic T-cells
will go and destroy the infection and start the process over again until the invader has been eliminated.
This is still a brief summary of what occurs in a immune system response, but I hope it helps.
What is the clinical problem associated with immune deficiency disorders?
The clinical problem associated with immune deficiency disorders is the development of unusual and severe infections such as; pneumonia, meningitis, or septicemia.
How do helper T cells first become part of the immune system response to invasion by a virus?
T helper cells (CD4 T cells) serve to guide the development of adaptive (acquired) immune responses. Once they are activated and instructed by cells of the innate (natural) immune system, they "help" to activate cytotoxic (CD8) T cells and B cells (antibody producers). In the case of viruses T helper cells, once polarized, will produce signaling molecules (such as IL-2) that alert the CD8 T cells to the infection and will help activate B cells and will instruct them as to which flavor or antibody is best to produce. The CD4 T cells will also release other signaling proteins (such as Interferons) that help get rid of the virus.
Can an HIV antibody test detect HIV after 7 days?
It would be highly unlikely that any commonly employed diagnostic HIV test could ever be used to detected infection just 2 days after exposure.
The rapid HIV antibody test - which is the test commonly used for routine bedside diagnostic testing of HIV in adults - tests for HIV antibodies ... most people will develop detectable antibodies within two to six weeks of infection, although some seroconvert later (99% will have detectable antibodies within three months of HIV infection).
The ELISA test (which is the most commonly used test to detect HIV infection in laboratories), is far more sensitive and can potentially detect possible HIV infections at a much earlier stage; but the problem with this test is that it can be difficult to determine a cut-off point between a definite positive and definite negative result, which sometimes results in problematic results that need further testing and follow-up samples.
Is chickenpox a natural immunity?
After the infection, you get naturally acquired active immunity to the chickenpox.
You have a very low chance of getting chickenpox again because your immune system has made antibodies to fight off.
If your antibodies protect you from disease then why do you keep getting colds?
The cold viruses mutate and change their proteins on their outer coats very easily, rapidly, and often. So if this mutation is not significant enough to bypass our previously developed antibodies, we may not get that same cold virus or a very similar one again, or you may have only a mild type of infection. But the changes often are significant enough for our immune systems to be unable to identify them as the same or similar pathogens, and then we have to undergo the full infectious process and immune response to build new antibodies to match the new antigen (mutated virus).
Does a RH negative individual normally contain anti RH antibodies?
No. Rh-antibodies only develop in cases of pregnancy, miscarriage or a blood transfusion like if you have rh-negative blood you got AB blood. Your RH-antibodies then work to attack the foreign substance, the RBCS. In the fetus, loss of RBCS means the rise of bilburin and could eventually lead to brain damage or (kernictous), and also have low muscle tone(hypotonia)
What is the process called when water can go in and out of a cell?
osmosis. I am not sure if I spelled it correctly
Why do guavas smell bad to others and good to me?
They smell really good and i love them because i usually associate them with Fall, which is my favorite season.
Does the immune system often kills cancerous cells?
Yes, most of the time the immune system weeds out cells that are abnormal.
Product of an organism that destroys or weakeans harmful microorganism?
There are many products of an organism that destroys or weakens harmful microorganisms. This could be an enzyme for example.
Droplet infections and waterborne infections describe the same type of transmission of pathogens?
if biboy is eating TAE...heheehe joke sa biboyt ang pangalan....
