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What are the different types of Rh?

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What are the different types of Rh?

The Rh system

  • A RhD positive (A+)
  • A RhD negative (A-)
  • B RhD positive (B+)
  • B RhD negative (B-)
  • O RhD positive (O+)
  • O RhD negative (O-)
  • AB RhD positive (AB+)
  • AB RhD negative (AB-)

How many blood groups are there in Rh?

The Rh blood group system consists of 49 defined blood group antigens, among which the five antigens D, C, c, E, and e are the most important.

What is O Rhesus D positive?

If you’re rhesus positive (RhD positive), it means that a protein (D antigen) is found on the surface of your red blood cells. Most people are RhD positive. If you’re rhesus negative (RhD negative), you do not have the D antigen on your blood cells.

What is B Rhesus positive blood?

Being B positive means that I have B antigens and RhD antigens on my red blood cells—as well as a whole load of other antigens. It means I have anti-A antibodies in my plasma—so, should I ever need a blood transfusion, I shouldn’t receive A or AB blood.

Are there any blood groups compatible with rhesus?

Since 2000, women of reproductive age and girls have also received transfusions compatible for further Rhesus antigens such as C, c, E and e in addition to the K antigen of the Kell blood group5.

Where are the Rhesus blood group proteins expressed?

In CD nomenclature, they are termed CD240D and CD240CE. Unlike proteins of other blood groups, Rhesus proteins are expressed only in the membranes of red blood cells and their immediate precursors1.

How is the Rh blood group different from other blood groups?

Whereas most blood types are determined by red cell antigens that differ by one or two amino acids, the Rh blood group contains the D antigen which differs from the C/c and E/e antigens by 35 amino acids.

How does rhesus disease occur in the mother?

Rhesus disease can only occur in cases where all of the following happen: the mother has a rhesus negative (RhD negative) blood type the baby has a rhesus positive (RhD positive) blood type the mother has previously been exposed to RhD positive blood and has developed an immune response to it (known as sensitisation)