10225
In fasted pregnant rats , the mean spontaneous firing rate of oxytocin neurones was again lower than in unfasted rats , although leptin had no significant effect even at the higher dose of 1 mg / rat .
 Chemical: oxytocin
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: oxytocin