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.

Q:  In contrast , vaccination with a peptide encoding an adenovirus type 5 ( Ad5 ) E1A CTL epitope results in CTL tolerance and enhanced growth of an Ad5 E1A - expressing tumor .

A: Ad5 E1A
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Q:  Molecular analyses indicate that the block in NF - kappaB impairs Iglambda rearrangement at the level of recombinase accessibility .

A: NF - kappaB
****
Q:  Live - attenuated human immunodeficiency virus type 1 ( HIV - 1 ) variants have shown great promise as AIDS vaccines , but continued replication can lead to the selection of faster - replicating variants that are pathogenic .

A:
HIV - 1
****