3700
However , when given intravesically , PGE2 may stimulate micturition by releasing tachykinins from nerves in and / or immediately below the urothelium .
 Chemical: PGE2; Chemical: tachykinins
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: PGE2; Chemical: tachykinins