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: Central effects of fexofenadine and cetirizine: measurement of psychomotor performance, subjective sleepiness, and brain histamine H1-receptor occupancy using 11C-doxepin positron emission tomography.

SOLUTION: histamine H1-receptor

PROBLEM: Binding of Diverse Environmental Chemicals with Human Cytochromes P450 2A13, 2A6, and 1B1 and Enzyme Inhibition.

SOLUTION: Human Cytochromes P450 2A13, 2A6, and 1B1

PROBLEM: A pilot study of IL-1 inhibition by anakinra in acute gout.

SOLUTION:
IL-1