24258
Surprisingly , this rapid calcium influx is blocked by the N - type calcium channel antagonist , omega - conotoxin .
 Chemical: calcium; Chemical: N; Chemical: calcium
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: calcium; Chemical: N; Chemical: calcium