14787
The number of gamma-positive cells and their fluorescence intensity were higher in UT-7 Epo than in UT-7 cells (0 to 17% barely positive cells and 23 to 40% clearly positive cells, respectively), indicating that the increase in globin mRNA observed in UT-7 Epo is due to both an increase of gene expression per cell and an increase in numbers of cells containing gamma-globin .
 gamma-positive cells, UT-7 Epo, globin mRNA, UT-7 cells, UT-7 Epo, gamma-globin
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:
 gamma-positive cells, UT-7 Epo, globin mRNA, UT-7 cells, UT-7 Epo, gamma-globin