20774
The efficacy of read - through induced by three compounds , aminoglycosides G418 and gentamicin , and PTC124 were evaluated for four nonsense mutations of PAH in an in vitro expression system in two mammalian cell lines ( COS - 7 and HEK293 ) .
 Chemical: aminoglycosides; Chemical: G418; Chemical: gentamicin; Chemical: PTC124
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: aminoglycosides; Chemical: G418; Chemical: gentamicin; Chemical: PTC124