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Mechanisms involved in the inhibition of growth of a human B lymphoma cell line , B104 , by anti-MHC class II antibodies .
 B104, anti-MHC class II antibodies, human B lymphoma cell line
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:
 B104, anti-MHC class II antibodies, human B lymphoma cell line