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: Effects of the histamine H1 antagonist chlorcyclizine on rat fetal palate development.

A: histamine H1
****
Q: Correlation of high urinary Smad1 level with glomerular hyperfiltration in type 2 diabetes mellitus.

A: Smad1
****
Q: Evidence that an alpha 2A-adrenoceptor subtype mediates antinociception in mice.

A:
alpha 2A-adrenoceptor
****