3110
To clarify the effects of bromocriptine on prolactinoma cells in vivo , immunohistochemical , ultrastructural and morphometrical analyses were applied to estrogen - induced rat prolactinoma cells 1 h and 6 h after injection of bromocriptine ( 3 mg / kg of body weight ) .
 bromocriptine, prolactinoma, estrogen, prolactinoma, bromocriptine
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 bromocriptine, prolactinoma, estrogen, prolactinoma, bromocriptine