5121
In both cell lines Merle 23 induced a pattern of transcription largely like that of phorbol ester although with a modest reduction at later times in the LNCaP cells , suggesting that the difference in biological response of the two cell lines to Merle 23 lies downstream of this transcriptional regulation .
 Chemical: Merle 23; Chemical: phorbol ester; Chemical: Merle 23
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: Merle 23, phorbol ester, Merle 23 
Answer:
 Chemical: Merle 23; Chemical: phorbol ester; Chemical: Merle 23