1884
Demonstration of replicative gene expression did not correlate with either low CD4+ cell counts (P > 0.05) or anti- EBV antibody titres (P > 0.05).
 CD4+
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:
 CD4+