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In this review , we will mainly focus on vitamin D as a component of immune regulation and on the role of vitamin D in antigen - specific and non - specific therapies with potential relevance for type 1 diabetes ( T1D ) .
 Chemical: vitamin D; Chemical: vitamin D
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: vitamin D; Chemical: vitamin D