TASK DEFINITION: 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.
PROBLEM:  The structure of the murine Dtk gene has been determined .

SOLUTION: murine Dtk gene

PROBLEM:  In contrast to the p16 - mediated G1 block , G1 arrest mediated by the cdk inhibitors p21Cip1 or p27Kip1 cannot be bypassed either by inactivation of pRb or overexpression of E2F family members .

SOLUTION: E2F family members

PROBLEM:  It was previously shown that Vi antigen expression was regulated by a system similar to the rcs regulatory system involved in colanic acid synthesis in Escherichia coli .

SOLUTION:
Vi antigen

