5226
All mutants, including one extensively mutagenized strain entirely missing the NF-kappaB and four Spl binding elements , replicated with wild-type kinetics and to a wild-type level in peripheral blood mononuclear cell cultures in 50 to 100% of the experiments.
 peripheral blood mononuclear cell cultures
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:
 peripheral blood mononuclear cell cultures