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What does blood type mean?
When an individual has type AB blood, it means the surface of their blood cells contain both A and B antigenic markers. A person with AB blood does not produce antibodies against either of these markers, thus their body does not mount an immune response against their own blood cells. A and B are two distinct antigenic markers/targets that antibodies can attack. Humans can have either A, B, both AB or neither A or B antigens. Your blood type designates the antigen your cells display. Since your body tolerates the type of blood you have, your body will not produce antibodies against your own blood type (otherwise you would be dead as your immune system would mount an attack on your own blood). However, your body will produce antibodies against the other antigenic markers that you do NOT normally exhibit. For example, a type B individual (who produces anti-A antibodies because they are not supposed to have type A blood cells in their body) cannot accept type A blood, otherwise their anti-A antibodies would attack the blood cells leading to immunorejection. An individual with type O blood has neither A or B antigens on the surface of their blood cells and thus can donate this blood to any other individual, since the blood will not be attacked by antibodies that target either A or B antigens. O is thus the universal donor, while AB is the opposite and is the universal acceptor as it tolerates both A and B antigens. Your body produces antibodies against anything it intends to attack, such as viruses, bacteria, and other foreign particles. The agent your body produces that does the attacking is called an antiBODY. The thing that gets attacked by an antibody is an antiGEN.
Why do blood types matter for blood donating purposes?
Blood types are extremely important in blood donation! Depending on the blood type, the red blood cells have a unique antigen (a special protien) that identifies that type of blood. Antibodies will react to foreign blood types based on the antigen they exhibit. Mixing blood from two individuals can lead to blood clumping or agglutination. The clumped red cells can crack and cause toxic reactions. This can have fatal consequences. If you belong to the blood group A, you have A antigens on the surface of your red blood cells and B antibodies in your blood plasma. If you belong to the blood group B, you have B antigens on the surface of your red blood cells and A antibodies in your blood plasma. If you belong to the blood group AB, you have both A and B antigens on the surface of your red blood cells and no A or B antibodies at all in your blood plasma. If you belong to the blood group 0 (null), you have neither A or B antigens on the surface of your red blood cells but you have both A and B antibodies in your blood plasma. RecipientDonor OABABOYYYYA Y YB YYAB (curtesy of wikipedia) For more info visit http://en.wikipedia.org/wiki/Blood_type http://nobelprize.org/educational_games/medicine/landsteiner/readmore.html
Which cells exhibit clonal diversity?
Cells of the immune system, such as B cells and T cells, exhibit clonal diversity. They undergo rearrangement of their antigen receptor genes to generate a diverse repertoire of cells capable of recognizing a wide range of antigens. This clonal diversity allows the immune system to respond to a variety of pathogens and antigens.
When the immune system does not respond to a particular antigen?
Tolerance exists when the immune system does not respond to a particular antigen. All cells and tissues in the body contain antigens that normally do not stimulate an immune response. The immune system is said to exhibit tolerance toward such antigens.
If you have blood type AB positive what does that mean?
The blood type AB signifies that you are a universal recipient. This is a good thing especially should you find yourself in a car accident or some other tragedy happen, you can receive blood from types A-, A+, B-, B+, O-, O+, and of course AB. However, this also means that you can only give blood to another person who has the blood type AB.
What was W E B DuBois Exhibit of American Negroes?
To fight the racist idea that Africans were primitive
What was the purpose of du bois exhibit of American negroes?
To argue against negative ideas.
What was the purpose of DU Bois's exhibit of Americans negroes?
To argue against negative ideas.
What was the purpose of du bois's exhibit of American negros?
To argue against negative ideas.
How do you use freestanding in a sentence?
Do you need to lean against the wall or can you do a freestanding handstand? A kiosk at the mall is a freestanding exhibit.
Why did wed Du Bois organize the exhibit of American Negroes?
To argue against negative ideas.
How do elephants masturbate and what behaviors do they exhibit during this activity?
Elephants can masturbate by using their trunk or rubbing against objects. During this activity, they may exhibit behaviors such as increased vocalizations, restlessness, and physical movements like swaying or rocking back and forth.
