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Our previous studies described the neuroprotective effects of catalpol in lipopolysaccharide ( LPS ) - induced inflammatory models , in which catalpol was shown to prevent mesencephalic neuron death and ameliorate cognitive ability animals .
 Chemical: catalpol; Chemical: catalpol
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: catalpol; Chemical: catalpol