difference between negative and positive blood

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Question:Is AB negative is good blood? Those with AB negative can donate blood or are they in there sickness or normal life? What blood group are there in human blood? What blood group are there in animals blood? What blood group are there in dinosaur blood? Is there anyone with all the blood group type? Why is it that someone with different blood group type can't give to that person with different blood group type? Same blood right!!

Answers:My dear John... NO !!! It's not the way you've mentioned in your last sentence...Blood is NOT..."blood"...There are (slight) differentiations in the various blood types...and quite complicated to explain with the allergens, etc. However here is some basic information on the subject: Normal red blood cells are recognized as self so we don t have antibodies against our own cells. However, we will have antibodies against the red blood cells of other people s blood if their cell surface carbohydrates are different from ours. This is the basis of ABO blood group and it s why we have to match blood types in a blood transfusion. The ABO blood group was discovered over one hundred years ago by Karl Landsteiner (Nobel Laureate: Karl Landsteiner). The biochemical basis was only elucidated in the 1970 s when the technology for examining the carbohydrate structure of glycoproteins was worked out. There s an allele of the A enzyme gene that involves only a very small number of mutations but the result is to switch the enzyme from one that transfers GalNAc to one that transfers galactose (Gal). The variant enzyme is called B enzyme (galactosyltransferase) and the B antigen structure has a terminal galactose (Gal) instead of a terminal GalNAc. If you are homozygous for the B allele on chromosome 9 then all of your red blood cells will have the B antigen oligosaccharide on their surface. You will not make antibodies against this structure because it s self. You also won t have antibodies against H-antigen for the reasons explained earlier. But you won t recognize A antigen as self so your antibodies will attack any foreign cells that come from people with the normal wild-type allele (A). People with blood type A will have antibodies against B antigen. They can receive blood from people with O blood type but they will reject blood from people with B blood type. You now have all the information you need to figure out who can give and receive blood from every possible combination of alleles: AA, AO, AB, BO, and OO. There are no known natural effects of these differing blood types. People with A, B, AB and O phenotypes do not differ in fitness in any major way that we have been able to detect. This suggests that the complete absence of the enzyme (null mutation) is neutral in the current human population and so is the switch from one form of the enzyme to another. (Suggestions that blood type determines susceptibility to some infections are common in the scientific literature. Most of them have not held up. The best correlation is a possible association between blood type O and susceptibility to cholera. This looks pretty good but the cause-and-effect relationship is still up in the air.) The ABO alleles seem to be segregating in the human population by random genetic drift. The O allele (non-functional enzyme) is the most common allele. The B allele is the least common probably because it arose more recently. Some Native American populations are homogeneous for the O allele; in those populations everyone has blood type O. (For maps of the frequencies A and B alleles see Distribution of Blood Types.) There are a total of 4 blood types, which are : O, A, B, and AB The : o-type is the most common of the 4 and is able to donate to all 4 types ! BUT: type A and type B can only donate to the AB-type ! Your Q. about the "pos./neg." part pertains to the "Rhesus factor" and some rare people have "rhesus factor negative", but most have "rhesus positive" ! All these factors are important for a blood transfusion because you can NOT give a "rhesus positive" person the blood from a "rhesus negative" person....and there's many more on the subject to be found in the internet under : www.blood-types.com Hope this was giving you some answers to your Q. - and- what the hell do you care about and "animal"(dinosaur's, etc.) anyway...??? That's a total different subject and has NOTHING to do with our "human blood" baby ! Send you all my love & care....Annette***

Question:What is the difference between blood type B positive and blood type B negative? Why cant blood type A positive donate to blood type A negative?

Answers:It's caused by the Rh factor. It's actually quite complicated to explain, involving 30 antigens of which D, C, c, E and e are the most important. Basically, if an individual has the Rh factor, they are blood type "positive" and if they don't have the Rh factor, then they're blood type "negative." You can try and decipher the exact meaning, but the basic explanation is probably all that's necessary.

Question:in science we are studying blood and we learned about A type and B types and AB and O but people say im AB positive~whats the positive mean or stand for please explain its for extra credit and i would really like to improve my grade thanks

Answers:The differance is that positive blood cells have Rh markers and negative does not.

Question:0- RH- 0+ RH-

Answers:it means that some people -with RH positive blood have an additional substance on theyr blood cells. The only problem is for women RH negative who have babies that are RH positive. In this case the mother's organism may develop antibodies that affect the pregnancy

From Youtube

Positive and Negative Thought :There are really two broad categories of thought, positive and negative. These are not right or wrong, good or bad, rather they are labels to help us understand the difference between limited and unlimited thinking. In this excerpt from the book by Harold W. Becker,Internal Power, Seven Doorways to Self Discovery, he shares how positive thinking uplifts us and expands our reality where negative thoughts drain us of our natural energy. Knowing the difference allows us to choose the perspective and thoughts we wish to have. If we wish to live a more abundant and unlimited reality we simply choose these thoughts and they become our expression and therefore our experience. For more, go to www.thelovefoundation.com The Love Foundation is a 501(c) 3 nonprofit organization with the mission of inspiring people to love unconditionally. Established in 2000, TLF has become the internationally recognized leading resource for understanding and applying unconditional love. Our vision is to assist people by building a practical foundation and experience of love within individuals and society as a whole, through our education, research and charitable programs. "The Home of Global Love Day each May 1st" Harold W. Becker is Founder and President of TLF and is also the author of Unconditional Love -- An Unlimited Way of Being and other works. Created by a kind volunteer as a gracious gift for The Love Foundation.

Rhesus Negative Blood Type :If the RH-negative factor is a 'normal' presentation of blood, then why is there a problem when a mother of the RH-negative blood group gives birth to an RH-positive blood group baby. This Hemolytic disease, actually an allergic reaction, can cause death when the two different blood groups are mingled during pregnancy. When the antigenic substances attack the negative blood group it can destroy the blood cells. So why does the human body produce antigens to this blood type? Where did the Rh negatives come from? Why does the body of an Rh negative mother carrying an Rh positive child reject her own offspring?