1805
We also aimed to investigate whether there is an association between - 318C / T and + 49A / G polymorphisms in the CTLA - 4 gene and the main clinical features of the disease .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None