1410
Moreover , our recent findings on the Tc52 encoding gene underline the interest of genetic manipulation of T . cruzi , not only making it possible to use more closely an in vitro approach to find out how genes function , but also to obtain ' attenuated ' strains that could be used in the development of vaccinal strategies .
 GENE: Tc52 encoding gene
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: Tc52 encoding gene