12857
Using carbonyl di - imidazole the hydroxy - Pdots were functionalized efficiently with streptavidin for high stability targeting , allowing specific labeling of mammalian cells .
 Chemical: carbonyl di - imidazole; Chemical: hydroxy
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: carbonyl di - imidazole, hydroxy 
Answer:
 Chemical: carbonyl di - imidazole; Chemical: hydroxy