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.

Ex Input:
 Steady - state levels of murine MMR mRNA were measured in the macrophage cell line J774E , which is known to express the protein at the cell surface .

Ex Output:
murine MMR mRNA


Ex Input:
 We speculate that the enhancing effect of glucose and galactose on fructose absorption may be due to activation of the fructose carrier .

Ex Output:
fructose carrier


Ex Input:
 Mutations in nifR1 ( ntrC ) and nifR4 ( rpoN , encoding sigma54 ) had no influence on xdh gene expression .

Ex Output:

xdh gene