7552
Specifically , we evaluated the actions of E ( 2 ) on the mitochondrial permeability transition pore ( MPTP ) by the calcein - acetoxymethylester / cobalt method using fluorescence microscopy and flow cytometry .
 Chemical: calcein; Chemical: acetoxymethylester; Chemical: cobalt
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: calcein; Chemical: acetoxymethylester; Chemical: cobalt