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In this study the genetic control of major histocompatibility complex (MHC) class II gene expression during the transition from B cell to plasma cell has been analyzed.
 plasma cell, major histocompatibility complex (MHC) class II gene, B cell
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:
 plasma cell, major histocompatibility complex (MHC) class II gene, B cell