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The PEBP2 alpha proteins contain a 128 - amino - acid ( aa ) region highly homologous to the Drosophila melanogaster segmentation gene runt .
 PEBP2 alpha proteins, Drosophila melanogaster segmentation gene runt
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 PEBP2 alpha proteins, Drosophila melanogaster segmentation gene runt