1198
Analysis of stable Chinese hamster ovary transfectants expressing allele - specific recombinant forms of GPIa showed that anti - Sit ( a ) exclusively reacted with the Glu ( 505 ) Met ( 799 ) , but not with the Glu ( 505 ) Thr ( 799 ) and the Lys ( 505 ) Thr ( 799 ) isoforms .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease 
Text: {0} 
Answer:
 None