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The actions of gonadal hormones on reactive gliosis involve different mechanisms , including the modulation of the activity of steroid receptors , such as estrogen receptors alpha and beta , the regulation of nuclear factor - kappa B mediated transcription of inflammatory molecules and the recruitment of the transcriptional corepressor c - terminal binding protein to proinflammatory promoters .
 Chemical: steroid; 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: steroid; Chemical: estrogen