23744
A particular focus of the present review will be on the function of recently identified genes of the Met salvage cycle or Yang cycle and the importance of the Met salvage cycle in the metabolism of MTA ( 5 ' - methylthioadenosine ) .
 Chemical: Met; Chemical: Met; Chemical: MTA; Chemical: 5 ' - methylthioadenosine
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: Met, Met, MTA, 5 ' - methylthioadenosine 
Answer:
 Chemical: Met; Chemical: Met; Chemical: MTA; Chemical: 5 ' - methylthioadenosine