24674
Pregnant Wistar rats were administered either corn oil ( vehicle ) or testosterone propionate at 0 . 2 mg / kg from gestational day 12 until the end of lactation and the reproductive function of male offspring was evaluated at 90 ( adulthood ) and 270 ( middle age ) days of age .
 testosterone propionate
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 testosterone propionate