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How are blood groups different?
Experiments with blood transfusions, the transfer of blood or blood components into a person's blood stream, have been carried out for hundreds of years. Many patients have died and it was not until 1901, when the Austrian Karl Landsteiner discovered human blood groups, that blood transfusions became safer. 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. Karl Landsteiner discovered that blood clumping was an immunological reaction which occurs when the receiver of a blood transfusion has antibodies against the donor blood cells. Karl Landsteiner's work made it possible to determine blood groups and thus paved the way for blood transfusions to be carried out safely. For this discovery he was awarded the Nobel Prize in Physiology or Medicine in 1930.
How many Mayan codices have been discovered?
how many Mayan codices have been discovered
How many blood groups are recognised for horses?
There are over 30 blood groups for horses, 8 of these are major groups and 7 are recognized internationally.
What William Harvey discovery?
William Harvey's discovery was limited because:•Doctors could not make blood transfusions until they discovered blood groups in 1901. •Many thought that his idea was mad. •Some Doctors ignored his theory.
When were blood groups discovered and who discovered them?
Austrian scholar Karl Landsteiner first describe blood group. He began to work on this topic since 1900. He found that no aggregation phenomenon could be found when he put his own erythrocyte and blood serum together in a test tube; when he mixed together erythrocyte and blood serum sourced from different individuals, there might be aggregation or no aggregation. This phenomenon was once observed by many people, but he was the only person who gave it an explanation. Erythrocyte has two kinds of specific structures that may exist alone or together. Blood serum has the antibody called agglutinin of specific structure in erythrocyte; when agglutinin meets with the specific structure in erythrocyte, aggregation will happen, which might be very dangerous when a person is on process of blood transfusion.
How many sub planets of Jupiter had been discovered?
As of now, 79 confirmed moons of Jupiter have been discovered. These moons are divided into several groups based on their orbital characteristics, with the largest being the Galilean moons: Io, Europa, Ganymede, and Callisto.
How many element had been discovered in 1870?
In 1870, 63 elements had been discovered.
What limited William Harvey's discoveries?
William Harvey's discovery was limited because:•Doctors could not make blood transfusions until they discovered blood groups in 1901. •Many thought that his idea was mad. •Some Doctors ignored his theory.
How many cities have been discovered in delhi?
The ruins of seven cities have been discovered in Delhi.
How many diseases are not yet discovered?
No-one knows, they haven't been discovered
How many metals have been discovered?
106
Why are blood cholesterol levels higher in people with blood group A and AB?
Blood Cholesterol levels are dependent on many factors of which antigen 'a' is one. Antigen 'a' is present only in blood groups A and AB. Hence, blood cholesterol levels are higher in individuals with blood groups A and AB.
