11904
However , other steroids , including Delta ( 5 ) - androstenediol , 5 alpha - androstanediol and 27 - hydroxycholesterol , which have a saturated A ring containing a 3 beta - hydroxyl and a C19 methyl group , also mediate physiological responses through binding to estrogen receptor - alpha ( ER alpha ) and ER beta .
 Chemical: steroids; Chemical: Delta ( 5 ) - androstenediol; Chemical: 5 alpha - androstanediol; Chemical: 27 - hydroxycholesterol; Chemical: 3 beta - hydroxyl; Chemical: methyl; 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: steroids; Chemical: Delta ( 5 ) - androstenediol; Chemical: 5 alpha - androstanediol; Chemical: 27 - hydroxycholesterol; Chemical: 3 beta - hydroxyl; Chemical: methyl; Chemical: estrogen