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We also provide evidence that neither the lambda O and P initiators nor the E . coli DnaJ and DnaK heat shock proteins play a direct role in the propagation of lambda replication forks in vitro .
 lambda O, P initiators, E . coli DnaJ, DnaK
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 lambda O, P initiators, E . coli DnaJ, DnaK