5724
In contrast, E1A -positive cells were no more susceptible to injury-induced necrosis than E1A -negative cells .
 E1A, E1A -positive cells, E1A -negative cells, E1A
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:
 E1A, E1A -positive cells, E1A -negative cells, E1A