5478
Because endogenous HSF DNA - binding activity is low and anti - hHSF1 antibody does not recognize Xenopus HSF , we employed this system for mapping regions in hHSF1 that are required for the maintenance of the monomeric state .
 HSF, anti - hHSF1 antibody, Xenopus HSF, hHSF1
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 HSF, anti - hHSF1 antibody, Xenopus HSF, hHSF1