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]:  Inhibition of Th1 differentiation by IL - 6 is mediated by SOCS1 .
[EX A]: IL - 6

[EX Q]:  Human peripheral blood T cells , stimulated with PMA for 48 h ( PMA blasts ) , were incubated with IL - 2 in the presence of incremental dosages of dexamethasone ( Dex ; 10 ( - 5 ) - 10 ( - 9 ) M ) .
[EX A]: IL - 2

[EX Q]:  A clinically acceptable synthetic derivative of MDP , namely murabutide ( MB ) , has been found to present interesting pharmacological properties and to suppress HIV - 1 replication in monocyte - derived macrophages ( MDM ) .
[EX A]:
HIV - 1