D (Rho) is the most important antigen after A and B antigens. Unlike the anti-A and anti-B antibodies, anti-D antibodies are only seen if a patient lacking D antigen is exposed to D + cells. The exposure of D+ cells usually occurs through pregnancy or transfusion.
http://faculty.madisoncollege.edu/mljensen/BloodBank/lectures/RhBloodGroupSystem.htm
- the AABB requires testing for weak D on all donors that do not directly agglutinate with anti-D reagents. - weak D positive units are labeled as D positive and should be transfused only to D-positive recipients. - testing for weak D in recipients is only required in pregnant women. - if D antigen is not detected, Rh (d) negative blood is provided. detection of weak D antigen is done with an.
https://quizlet.com/72969261/weak-d-flash-cards/
The term DU is widely used to describe cells which have. a quantitative reduction in the expression of their RhD antigen. Or qualitative variation in RhD antigen expression, these are referred to as partial D. Weak D individuals may also be partial D.
http://www.slideserve.com/coye/weak-d-testing-du
Mr. Mohammed Jaber. WEAK EXPRESSION OF THE R h D ANTIGEN (D U ). The term D U is widely used to describe cells which have a quantitative reduction in the expression of their RhD antigen. I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
http://www.slideserve.com/coye/weak-d-testing-du
C and c are alleles with Cw occasionally seen as a weaker expression of C. E and e are alleles although E is seen only a third as often as e. The e antigen is referred to as a high incidence antigen since it is found in 98% of the population. D and the lack of D (or d) are alleles.
http://faculty.madisoncollege.edu/mljensen/BloodBank/lectures/RhBloodGroupSystem.htm
Weak D Testing (Du) Testing. PRINCIPLE AND APPLICATIONS. Some red cells possess the D antigen but it is expressed so weakly that the cells are not agglutinated directly by anti-D sera. An indirect antiglobulin test is necessary to identify patients with the Weak D (formerly known as Du )phenotype. Weak D testing is done on all prenatal patients and candidates for Rh immune globulin.
http://faculty.madisoncollege.edu/mljensen/BloodBank/Lab_Manual/weak_d_testing_du_testing.htm
The common alleles are: 1  C and c are alleles with Cw occasionally seen as a weaker expression of C. 2  E and e are alleles although E is seen only a third as often as e. The e antigen is referred to as a high incidence antigen since it is found in 98% of the population. 3  D and the lack of D (or d) are alleles.
http://faculty.madisoncollege.edu/mljensen/BloodBank/lectures/RhBloodGroupSystem.htm
Those with weak D were traditionally thought to have completely normal but significantly decreased amounts of D antigen on their RBCs (note that this is in contrast to classic partial D, in which the person is assumed to have abnormal D antigen in normal amounts on their RBCs).
http://www.bbguy.org/education/glossary/glw04/
Definition: The weak D phenotype (Du) is a weakened form of the D antigen that in routine D typing will react with some anti-D but not with others (when an immediate spin or 37° incubation is done). Weak D red cells have the D antigen, but have fewer D antigens per cell than normal Rh positive cells. The current preferred term for Du is weak D.. The frequency of the weak D phenotype in Caucasians is approximately 0.3 percent (3 in 1000).
https://sites.ualberta.ca/~pletendr/tm-modules/rh/70rh-weakd.html
Weak D Phenotype. The main Rh antigen (the one that determines whether a person is “Rh-positive” or “Rh-negative”) is known to blood bankers as the “D” antigen. Most D-positive (“Rh-positive”) people express the antigen quite well, and the person is obviously D-positive when anti-D is mixed with their red cells.
http://www.bbguy.org/education/glossary/glw04/
what is a weak d antigen
The weak D phenotype is a weakened form of the D antigen that in routine D typing will react with some anti-D but not with others. The weak D phenotype is a weak D antigen.