21307
Neuroprotection by steroids after neurotrauma in organotypic spinal cord cultures : A key role for progesterone receptors and steroidal modulators of GABAA receptors .
 Chemical: steroids; Chemical: progesterone
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: progesterone