606
It is therefore proposed that the defective surface expression of CTLA - 4 by CHS T cells is involved in the generation of lymphoproliferative disease .
 CHS, lymphoproliferative disease
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease 
Text: {0} 
Answer:
 CHS, lymphoproliferative disease