7819
The hepatic level and activity of methionine adenosyltransferase I / III , an S - adenosylmethionine synthesizing enzyme , were significantly increased .
 Chemical: methionine; Chemical: S - adenosylmethionine
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: methionine; Chemical: S - adenosylmethionine