2084
All 10 cysteines in the intracellular domain of IA - 2 were modified to serine by site - directed mutagenesis , and the effects of these changes on autoantibody binding in comparison with wild - type control were investigated by radiobinding assay .
 Chemical: cysteines; Chemical: serine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: cysteines; Chemical: serine