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]: A potent Chk1 inhibitor is selectively cytotoxic in melanomas with high levels of replicative stress.
[EX A]: Chk1

[EX Q]: Current and future prospects for anticoagulant therapy: inhibitors of factor Xa and factor IIa.
[EX A]: factor Xa

[EX Q]: The propeptides of VEGF-D determine heparin binding, receptor heterodimerization, and effects on tumor biology.
[EX A]:
VEGF-D