20542
More recently , this non - genomic signaling mechanism has been found in blood vessels , and mediates vasodilatory responses to estrogen and estrogen - like agents ; however , downstream signaling events involved acute estrogen action remain unclear .
 Chemical: estrogen; Chemical: estrogen; Chemical: estrogen
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: estrogen; Chemical: estrogen; Chemical: estrogen