20571
The levels of hippocampal LTP , the spatial memory , the apoptosis of hippocampal neurons , the levels of lactate dehydrogenase ( LDH ) release , and the serum level of superoxide dismutase ( SOD ) and malondialdehyde ( MDA ) were assayed .
 Chemical: lactate; Chemical: superoxide; Chemical: malondialdehyde; Chemical: MDA
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: lactate; Chemical: superoxide; Chemical: malondialdehyde; Chemical: MDA