The name originates from the Rhesus monkey, in which this antigen was first identified in the 1940s. The Rh antigen blood type system is a critical component of human blood classification, dictating compatibility for transfusions and playing a profound role in pregnancy.
Rh Antigen Blood Type Genetics Basics
For this reason, blood banks meticulously screen for the Rh factor and label units accordingly. This distinction is not merely academic; it triggers powerful immune system responses that can impact medical decisions throughout your life.
However, during childbirth, delivery complications, or procedures like amniocentesis, fetal blood cells can enter the mother's bloodstream. The gene for the RhD antigen is dominant, meaning that only one copy is needed for the trait to be expressed.
Rh Antigen Blood Type Genetics Basics
Viewing these cells as foreign, her immune system produces anti-D antibodies. If an individual inherits one Rh positive gene (from one parent) and one Rh negative gene (from the other), they will be Rh positive.
More About Rh antigen blood type
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More perspective on Rh antigen blood type can make the topic easier to follow by connecting earlier points with a few simple takeaways.