1
SBB 560 Exam 2 Questions with Correct
Answers | Updated (100% Correct Answers)
Fya, Fyb, Fyb 6 Answer: sensitive to papain/ficin
resistant to trypsin
resistant to DTT, chloroquine
Fyb 3, Fyb5 Answer: resistant to papain/ficin
resistant to trypsin
resistant to DTT, chloroquine
Fy3 Answer: -present on all cells that are Fy(a+) or Fy(b+)
- found in Caucasian, Black, and Cree Indian
- resistant to protease
- NOT denatured by proteases/resistant to enzyme
- Fyx have weak Fy3
Anti-Fy3 Answer: - produced by non-Black Fy(a-b-) individuals
- reacts with Fy(a+) or Fy(b-) RBCs
- non-reactive with Fy(a-b-) RBCs
© 2025 All rights reserved
, 2
- reacts with enzyme treated cells
- made by non-black individuals reacts strongly with cord cells
- made by black individuals does not react or reacts weakly with
cord cells
- responsible for acute and delayed HTRs
- agglutinates with Rh null cells (FY: 3, -5)
Fy5 Answer: -present on all RBCs that are Fy(a+) or Fy(b+)
- absent on cells with the Fy(a-b-) phenotype but also from cells of
the Rh null phenotype
- needs normal Rh for expression
- resistant to protease
- resistant to enzyme
- D- - --> weak Fy5 expression
Anti-Fy5 Answer: -majority produced by Blacks
- reacts with Fy(a+) or Fy(b+) RBCs
- non-reactive with Fy(a-b-) RBCs
- reacts with enzyme treated cells
© 2025 All rights reserved
SBB 560 Exam 2 Questions with Correct
Answers | Updated (100% Correct Answers)
Fya, Fyb, Fyb 6 Answer: sensitive to papain/ficin
resistant to trypsin
resistant to DTT, chloroquine
Fyb 3, Fyb5 Answer: resistant to papain/ficin
resistant to trypsin
resistant to DTT, chloroquine
Fy3 Answer: -present on all cells that are Fy(a+) or Fy(b+)
- found in Caucasian, Black, and Cree Indian
- resistant to protease
- NOT denatured by proteases/resistant to enzyme
- Fyx have weak Fy3
Anti-Fy3 Answer: - produced by non-Black Fy(a-b-) individuals
- reacts with Fy(a+) or Fy(b-) RBCs
- non-reactive with Fy(a-b-) RBCs
© 2025 All rights reserved
, 2
- reacts with enzyme treated cells
- made by non-black individuals reacts strongly with cord cells
- made by black individuals does not react or reacts weakly with
cord cells
- responsible for acute and delayed HTRs
- agglutinates with Rh null cells (FY: 3, -5)
Fy5 Answer: -present on all RBCs that are Fy(a+) or Fy(b+)
- absent on cells with the Fy(a-b-) phenotype but also from cells of
the Rh null phenotype
- needs normal Rh for expression
- resistant to protease
- resistant to enzyme
- D- - --> weak Fy5 expression
Anti-Fy5 Answer: -majority produced by Blacks
- reacts with Fy(a+) or Fy(b+) RBCs
- non-reactive with Fy(a-b-) RBCs
- reacts with enzyme treated cells
© 2025 All rights reserved
