1966
Hypothalamic prolactin receptor messenger ribonucleic acid levels , prolactin signaling , and hyperprolactinemic inhibition of pulsatile luteinizing hormone secretion are dependent on estradiol .
 ribonucleic acid, hyperprolactinemic, estradiol
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 ribonucleic acid, hyperprolactinemic, estradiol