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One group of mutants replicated very similarly to SIVmac239 in kinetics and yield in CEMxl74 cells (2x NFKappaB > or = SlVmac239 approximately deltaNFkappaB approximately deltaSpl234 approximately substNFkappaB approximately substSpl2 approximately substSp23 ), while a second group replicated with delayed or slightly delayed kinetics in CEMxl74 cells ( SIVmac239 > substSp34 > deltaNFkappaBdeltaSpl234 approximately deltaNFkappaBdeltaSp1 > substSpl234 ).
 deltaNFkappaBdeltaSpl234, CEMxl74 cells, deltaNFkappaB, substSpl234, substSpl2, deltaSpl234, substSp23, substSp34, SlVmac239, deltaNFkappaBdeltaSp1, CEMxl74 cells, substNFkappaB, NFKappaB
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:
 deltaNFkappaBdeltaSpl234, CEMxl74 cells, deltaNFkappaB, substSpl234, substSpl2, deltaSpl234, substSp23, substSp34, SlVmac239, deltaNFkappaBdeltaSp1, CEMxl74 cells, substNFkappaB, NFKappaB