A healthy 22 yr old wants to donate kidney to brotherShe has DR3/DR6 HLABrother has DR3/DR4Donor stimulator cells are irradiated and RESPONDER cells from RECIPIENT are isolatedA mixed lymphocyte reaction is doneThe T lymphocytes that proliferate in these cultures will most likely react with which HLA type?
a. DR3
b. DR6
c. DR4
d. DR3/DR4