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.

Example Input: Despite their high degree of sequence similarity , all five RFC genes are essential for cell proliferation in S . cerevisiae .
Example Output: RFC genes

Example Input: ( We observed a ferritin value as high as 47 mg / L in one patient . ) Results with all these kits did not inter - compare well for ferritin concentrations greater than 300 micrograms / L , a finding that casts further doubt on the controversial use of serum ferritin measurement in cases of iron overload .
Example Output: serum ferritin

Example Input: The highly conserved region of U6 snRNA has a structural similarity with the catalytic domain of the negative strand of the satellite RNA of tobacco ring spot virus [ ( - ) sTRSV ] , suggesting that the highly conserved region of U6 snRNA forms the catalytic center .
Example Output:
U6 snRNA