3698
The effect of intra - arterial PGE2 could not be blocked by intra - arterial RP 67 , 580 or SR 48 , 968 , which opens the possibility that the micturition reflex elicited by intra - arterial PGE2 was mediated by pathways other than the reflex initiated when the PG was given intravesically .
 Chemical: PGE2; Chemical: RP 67 , 580; Chemical: SR 48 , 968; Chemical: PGE2; Chemical: PG
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: RP 67 , 580; Chemical: SR 48 , 968; Chemical: PGE2; Chemical: PG