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The present study investigated the protective effect of CYT on cultured cortical neural injury induced by N - methyl - d - aspartate ( NMDA ) .
 Chemical: CYT; Chemical: N - methyl - d - aspartate; Chemical: NMDA
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: CYT; Chemical: N - methyl - d - aspartate; Chemical: NMDA