11763
In the analysis of gene expression , 50 mu M of sodium metasilicate upregulated type I collagen ( COL - I ) compared to the control group .
 Chemical: sodium metasilicate
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: sodium metasilicate