1067
Differential modulation by estrogen of alpha2 - adrenergic and I1 - imidazoline receptor - mediated hypotension in female rats .
 estrogen, imidazoline, hypotension
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 estrogen, imidazoline, hypotension