In this task, you are given a sentence. You are expected to recognize the name of any form of chemical substances. Although there might be several correct answers, you need to write one of them.

Q: Relative expression of cholesterol transport-related proteins and inflammation markers through the induction of 7-ketosterol-mediated stress in Caco-2 cells.

A: cholesterol
****
Q: Impaired expression of the uncoupling protein-3 gene in skeletal muscle during lactation: fibrates and troglitazone reverse lactation-induced downregulation of the uncoupling protein-3 gene.

A: troglitazone
****
Q: The Fer tyrosine kinase is important for platelet-derived growth factor-BB-induced Stat3 phosphorylation, colony formation in soft agar and tumor growth in vivo.

A:
tyrosine
****