11475
In C57BL/10 (B10) mice , a single inoculation intraperitoneally (i.p.) led to the recognition of an immunodominant antigen in E1A .
 immunodominant antigen, E1A
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 immunodominant antigen, E1A