5691
However , long - term potentiation ( LTP ) , a cellular mechanism thought to underlie learning and memory , in the CCL2 - transgenic hippocampus was resistant to the ethanol - induced depression of LTP observed in the non - transgenic hippocampus .
 Chemical: ethanol
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: ethanol