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: The preventive effect of uncarboxylated osteocalcin against free fatty acid-induced endothelial apoptosis through the activation of phosphatidylinositol 3-kinase/Akt signaling pathway: Uncarboxylated osteocalcin and endothelial apoptosis.

A: phosphatidylinositol
****
Q: Increased responsiveness of rat colonic splanchnic afferents to 5-HT after inflammation and recovery.

A: 5-HT
****
Q: Inhibitory effects of lysine analogues on t-PA induced whole blood clot lysis.

A:
lysine
****