2556
In summary , GS967 selectively suppressed late I ( Na ) and prevented and / or reduced the incidence of experimentally induced arrhythmias in rabbit myocytes and hearts .
 Chemical: GS967; Chemical: Na
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: GS967; Chemical: Na