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:
 The coding region of nifA was determined using a translational lacZ fusion and by site - directed mutagenesis to identify which of four in frame AUG codons was used .

Ex Output:
lacZ fusion


Ex Input:
 In those patients who before transplantation were serological negative for CMV but had received organs from CMV - IgG positive donors , the incidence of the disease was highest .

Ex Output:
CMV - IgG


Ex Input:
 A lead phthalocyanin method for the demonstration of acid hydrolases in plant and animal tissues .

Ex Output:

acid hydrolases