3758
Many mammary tumors induced by mouse mammary tumor virus ( MMTV ) contain a provirus in the same region of the host - cell genome , leading to expression of a putative cellular oncogene called int - 1 .
 GENE: int - 1
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: int - 1 
Answer:
 GENE: int - 1