3114
These findings suggest that lowered serum prolactin levels in the early phase of bromocriptine treatment may result from an impaired secretion of prolactin due to decreasing numbers of cytoplasmic microtubules .
 Chemical: bromocriptine
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
 Entities: bromocriptine 
Answer:
 Chemical: bromocriptine