TASK DEFINITION: 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.
PROBLEM: Localization of an 11 beta hydroxysteroid dehydrogenase activity to the distal nephron. Evidence for the existence of two species of dehydrogenase in the rat kidney.

SOLUTION: 11 beta hydroxysteroid

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

SOLUTION: histamine

PROBLEM: Pharmacological, pharmacokinetic and clinical properties of olopatadine hydrochloride, a new antiallergic drug.

SOLUTION:
olopatadine