In this task, you are given a sentence. You are expected to recognize the name of gene or protein. Although there might be several correct answers, you need to write one of them.

 In contrast , 50 % downmodulation of HLA - A2 by Nef required 16 to 24 h and about 50 - to 100 - fold - greater concentrations of 4 - HT .
HLA - A2

 This activity is further augmented by cotransfected Smad4 .
cotransfected Smad4

 The administration of 1 mg of dexamethasone , 5 mg of prednisone , and 37 . 5 mg of cortisone acetate resulted in a 30 % decrease in binding sites after 1 week with no change in binding affinity .

binding sites