11764
DHPG - evoked outward current was blocked by cyclopiazonic acid and thapsigargin and mimicked by caffeine , suggesting mediation by release of intracellular Ca ( 2 + ) .
 Chemical: DHPG; Chemical: cyclopiazonic acid; Chemical: thapsigargin; Chemical: caffeine; Chemical: Ca ( 2 + )
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: DHPG; Chemical: cyclopiazonic acid; Chemical: thapsigargin; Chemical: caffeine; Chemical: Ca ( 2 + )