3551
We measured effects on the HIV-1 LTR in T cell lines that were stimulated with antibodies against CD45 and in those that lacked the expression of CD45 on their surfaces.
 CD45, CD45, HIV-1 LTR, T cell lines
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:
 CD45, CD45, HIV-1 LTR, T cell lines