You will be given a definition of a task first, then some input of the task.
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.

These data suggest that ubiquitous expression of the tolerizing Ad5 E1A peptide within a short period of time causes activation - induced cell death of Ad5 E1A - specific CTLs .
Output:
Ad5 E1A