22140
CONCLUSIONS : Genetic factors are likely primarily responsible for differential antidepressant - like effects of lithium in the C57BL / 6J and BALB / cJ strains .
 Chemical: lithium
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: lithium