521
Furthermore , CA - induced vasorelaxation was inhibited by the PKG inhibitor KT5823 ( 0 . 3 mu M ) and the Ca ( 2 + ) - activated K ( + ) channel inhibitor tetraethylammonium ( 10 ( - 3 ) M ) .
 Chemical: KT5823; Chemical: Ca ( 2 + ); Chemical: K ( + ); Chemical: tetraethylammonium
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: KT5823; Chemical: Ca ( 2 + ); Chemical: K ( + ); Chemical: tetraethylammonium