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Human immunodeficiency virus -associated Hodgkin's disease derives from post-germinal center B cells .
 cell type: post-germinal center B cells
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: post-germinal center B cells 
Answer:
 cell type: post-germinal center B cells