2521
After GM - CSF or IL - 3 , a 1 . 2 - to 2 . 4 - fold increase in S - phase cells was observed in nine of 14 GM - CSF and seven of 11 IL - 3 cases .
 cells
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 cells