737
The neurohypophysial vasopressin and oxytocin content was bioassayed by pressor effect following Dekanski or milk - ejection activity in vitro following van Dongen and Hays , respectively .
 vasopressin, oxytocin
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 vasopressin, oxytocin