Hemophilia B has been treated in a pre-clinical model by gene transfer for which deficient clotting factor?
A.	Factor II
B.	Factor VII
C.	Factor IX
D.	Factor X
Answer:C
Hemophilia B has been treated in a pre-clinical model by gene transfer for which deficient clotting factor?
A.	Factor II B.	Factor VII C.	Factor IX D.	Factor X