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Searching the human DNA data base of expressed sequence tags ( EST ) revealed novel partial sequences similar to , but distinct from , the sequences of the previously known PEF proteins .
 GENE: PEF proteins
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: PEF proteins