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Kaplan Qbank USMLE



Author6 Posts
  #1

a 50 year old man undergoes allogeneic bone marrow transplantation for relapsed acute lymphocytic leukemia that includes pretreatment
with total body irradiation.
his HLA profile is HLA-A1,-A 10,HLA-B7,-B18 and HLA-Cw1-D
The donor bone marrow cells have the following HLA profilr,HLA-A3,-A9,HLA-B7,HLA-Cw2,-Cw3
Three months after the transplant,the patient is diagnosed with graft-versus-host disease {GVHD},he dies 1 month later
which of the following best describes the pricipal immune mechanism resposible for GVHD in this patient ?

a.-activation of donor cell derived natural killer cells
b.-donor cell derived innate immune responses directed against disparate MHC antigens
c.-donor T-lyphocyte-mediated suppressionof bone marrow hematopoiesis
d.-generation of donor B-lymphocyte antibody responses directed against disparate host MHC antigens
e.-generation of donor T-lymphocyte responses directed against disparate MHC antigens

shocked

  #2

e

it's exactly the definition of GVH


  #3

E

  #4

I agree

E

  #5

E

___________________
The Key to Succeed is Patience.

  #6

E







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