7219
To determine why alveolar macrophages do not express AP-1 DNA binding activity , we first showed that there was not a decrease in expression of the FOS and JUN proteins that make up the AP-1 complex.
 AP-1, AP-1, alveolar macrophages
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:
 AP-1, AP-1, alveolar macrophages