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Furthermore, the analysis of IkappaBalpha turnover demonstrated an increased degradation of IkappaBalpha in HIV-1 -infected cells that may account for the constitutive DNA binding activity .
 HIV-1 -infected cells, IkappaBalpha, IkappaBalpha, constitutive DNA
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:
 HIV-1 -infected cells, IkappaBalpha, IkappaBalpha, constitutive DNA