740
The treatment group also showed in vivo T - cell activation with an initial lymphopenia followed by a rebound lymphocytosis and upregulation of the subset markers CD25 ( interleukin 2 receptor ) and CD45RO ( T - memory cells ) .
 CD25, interleukin 2 receptor, CD45RO
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 CD25, interleukin 2 receptor, CD45RO