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These data indicate that tumor cells of NLPHD uniformly display a GC B-cell phenotype , whereas the phenotype of tumor cells of CHD appears to be modulated by the surrounding cellular background, particularly CD40L + reactive T cells .
 T cells, tumor cells, tumor cells, CD40L, CD40L + reactive T cells
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:
 T cells, tumor cells, tumor cells, CD40L, CD40L + reactive T cells