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: Serum estriol levels during beta - receptor agonist infusion in the third trimester of pregnancy .

A: beta - receptor
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Q: Here we show that one nudF suppressor also suppresses hs - mutations in nudA , nudC , and nudG and deletions in nudA and nudF .

A: nudF suppressor
****
Q: The fz - 1 and fz - 2 genes are widely expressed in rat tissues with the highest steady - state levels of mRNA in kidney , liver , heart , uterus , and ovary .

A:
fz - 1
****