Four Mechanisms of Weakened Expression of the D Antigen

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The page below is a sample from the LabCE course Overview Of Major Antigens of the Rh Blood Group System. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

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Four Mechanisms of Weakened Expression of the D Antigen

The following four mechanisms are responsible for the weakened expression of the D antigen:
1. C in trans to RHD
2. Weak D
3. Partial D
4. Del