Although all blood is made of the same basic elements, not all blood is alike. In
fact, there are eight different common blood types. Learn how these blood groups
Blood Types. Human blood is grouped into four types: A, B, AB, and O. Each
letter refers to a kind of antigen, or protein, on the surface of red blood cells.
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Mar 27, 2013 ... An introduction to human blood types. View more lessons: http://www.
The study of (human) blood is called hematology. Equally as interesting as
chromosomes is an examination of blood types, the so-called ABO alleles and
There are four main blood groups (types of blood): A, B, AB and O. Your blood
group is determined by the genes you inherit from your parents. Each group can
Sep 9, 2014 ... Blood type tests are done before a person gets a blood transfusion and to check
a pregnant woman's blood type. Human blood is typed by ...
Dec 3, 2001 ... Many patients have died and it was not until 1901, when the Austrian Karl
Landsteiner discovered human blood groups, that blood transfusions ...
The ABO Blood Groups; The Rh System; Other blood groups ... Human red blood
cells before (left) and after (right) adding serum containing anti-A antibodies.
The main reasons to know your blood group are if you need to have a blood
transfusion or if you are pregnant. Learn more about blood grouping from Patient.
Blood typing is a method to tell what specific type of blood you have. What type
you have depends on whether or not there are certain proteins, called antigens, ...