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: Brugada syndrome without mutation of the cardiac sodium channel gene in a Taiwanese patient.

A: cardiac sodium channel
****
Q: Characterization of the molecular mechanisms involved in the increased insulin secretion in rats with acute liver failure.

A: insulin
****
Q: Cloning, characterization, and expression of a calcitonin receptor from guinea pig brain.

A:
calcitonin receptor
****