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.

Demonstration of histamine receptors on human platelets by flow cytometry.
histamine receptors

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

Enhancement of radiosensitivity by topoisomerase II inhibitor, amrubicin and amrubicinol, in human lung adenocarcinoma A549 cells and kinetics of apoptosis and necrosis induction.

topoisomerase II