4788
Oxyhemoglobin did not affect helodermin - induced hypotension , whereas it shortened the duration of acetylcholine ( ACh ) - produced hypotension .
 Chemical: helodermin; Disease: hypotension; Chemical: acetylcholine; Chemical: ACh; Disease: hypotension
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: helodermin; Disease: hypotension; Chemical: acetylcholine; Chemical: ACh; Disease: hypotension