1319
The experiments in this report show that cysteine or N-acetylcysteine ( NAC ) raise the intracellular glutathione ( GSH ) level and inhibit HIV-1 replication in persistently infected Molt-4 and U937 cells .
 cell line: U937 cells; cell line: Molt-4
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 cell line: U937 cells; cell line: Molt-4