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.

[Q]: The (R)-omeprazole hydroxylation index reflects CYP2C19 activity in healthy Japanese volunteers.
[A]: CYP2C19


[Q]: Protein kinase C potentiates homologous desensitization of the beta2-adrenoceptor in bovine tracheal smooth muscle.
[A]: beta2-adrenoceptor


[Q]: Mercury induces the expression of cyclooxygenase-2 and inducible nitric oxide synthase.
[A]:
cyclooxygenase-2