21193
Experimental and computational study of the interaction of novel colchicinoids with a recombinant human alpha I / beta I - tubulin heterodimer .
 Chemical: colchicinoids
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: colchicinoids 
Answer:
 Chemical: colchicinoids