15069
Our results have shown that the lower concentrations ( 10 ( - 15 ) - 10 ( - 14 ) M ) of NP decreased the amplitudes of voltage - gated K ( + ) currents ( IKv ) and activated L - type Ca ( 2 + ) currents ( ICa - L ) by reducing half - activation membrane potentials of activation kinetics curves .
 Chemical: K ( + ); Chemical: Ca ( 2 + )
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: K ( + ), Ca ( 2 + ) 
Answer:
 Chemical: K ( + ); Chemical: Ca ( 2 + )