4868
CXCL8 and acetylcholine ( ACh ) concentrations were measured using ELISA and LC - MS / MS , respectively .
 Chemical: acetylcholine; Chemical: ACh
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: acetylcholine; Chemical: ACh