Duffy Flashcards
1
Q
Fy antigens developed in utero?
A
Yes, detected as early as 6 weeks gestation
2
Q
Which one is more immunogenic? Fya or Fyb?
A
Fya is 20x more immunogenic
3
Q
What parasite cannot enter RBCs when you lack Fy antigens
A
Plasmodium vivax (Malaria)
4
Q
How do enzymes affect Fy antigens
A
Destroyed by enzymes
5
Q
Positive frequency Fya
A
W 66%
B 10%
6
Q
Positive frequency Fyb
A
W 83%
B 23%
7
Q
Fy antigens present on some nulls
A
Fy3 Fy5
