5370
To examine the role of BRCA1 in normal tissue growth and differentiation , and to generate a potential model for the cancer susceptibility associated with loss of BRCA1 function , we have created a mouse line carrying a mutation in one Brca1 allele .
 cancer
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease 
Text: {0} 
Answer:
 cancer