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]:  Unestablished quail myoblasts were infected with a retroviral vector encoding the oncogenic form of H - Ras in order to investigate the mechanism by which this oncoprotein interferes with terminal differentiation .
[EX A]: H - Ras

[EX Q]:  Human epidermal growth factor ( EGF ) , a naturally occurring protein , has been implicated in the protection of gastrointestinal mucosal integrity .
[EX A]: epidermal growth factor

[EX Q]:  Similar tissue - specific patterns are observed with a fusion between the caufliflower mosaic virus 35S RNA promotor and the GUS gene .
[EX A]:
GUS gene