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 Input:
In T cells these two signal pathways are critical for interleukin - 2 production .

Ex Output:
interleukin - 2

Ex Input:
The coding region of nifA was determined using a translational lacZ fusion and by site - directed mutagenesis to identify which of four in frame AUG codons was used .

Ex Output:
lacZ fusion

Ex Input:
Moreover , our recent findings on the Tc52 encoding gene underline the interest of genetic manipulation of T . cruzi , not only making it possible to use more closely an in vitro approach to find out how genes function , but also to obtain ' attenuated ' strains that could be used in the development of vaccinal strategies .

Ex Output:
Tc52 encoding gene