9386
Melanocortins have also long been known ( i ) to exert important neurotrophic effects , not only during fetal development but also in adulthood , in different animal models of brain lesions ; ( ii ) to reduce the morphological correlates of brain aging ; ( iii ) to retard the behavioral deficits that develop during the aging process .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None