Examlex
In linear programs with more than two decision variables, the area of feasible solutions is represented by an n-dimensional polyhedron.
Rh Factor
An antigen found on the surface of red blood cells that can lead to immune reactions during blood transfusion or pregnancy if the donor and recipient or mother and fetus have incompatible Rh types.
ABO Blood Groups
The ABO blood group system is one of the most important blood-type systems in human blood transfusion, comprising four main blood groups: A, B, AB, and O.
Passive Immunity
Immunity acquired by the transfer of antibodies or activated T-cells from another individual, providing temporary protection against disease.
Active Immunity
Immunity that results from the production of antibodies by the immune system in response to the presence of an antigen.
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