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.

[EX Q]:  However , these compounds did not have a significant effect on SDF1 alpha - induced mitogen - activated protein kinase activity .
[EX A]: SDF1 alpha

[EX Q]:  In this study , we obtained PBL from Epstein - Barr virus ( EBV ) IgG antibody positive kidney transplant recipients ( R ) and their living - related donors ( LRD ) one year after renal transplantation .
[EX A]: IgG antibody

[EX Q]:  This was surprising , since the heptamer and octamer sequence motifs bear no obvious similarity to each other .
[EX A]:
octamer sequence