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.

Valdecoxib: assessment of cyclooxygenase-2 potency and selectivity.
cyclooxygenase-2

Cannabinoid discrimination and antagonism by CB(1) neutral and inverse agonist antagonists.
CB(1)

Amelioration of palmitate-induced insulin resistance in C2C12 muscle cells by rooibos (Aspalathus linearis).

insulin