14785
Globin chains ( alpha , beta and gamma ) were clearly detectable by affinity chromatography in UT-7 Epo but not in UT-7 cells .
 alpha, gamma, beta, UT-7 Epo, Globin chains, UT-7 cells
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:
 alpha, gamma, beta, UT-7 Epo, Globin chains, UT-7 cells