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 dextromethorphan analog dimemorfan attenuates kainate-induced seizures via sigma1 receptor activation: comparison with the effects of dextromethorphan.

SOLUTION: sigma1 receptor

PROBLEM: Activation of the anti-cancer agent upamostat by the mARC enzyme system.

SOLUTION: mARC

PROBLEM: Current and future prospects for anticoagulant therapy: inhibitors of factor Xa and factor IIa.

SOLUTION:
factor Xa