4750
High - dose sodium selenite toxicity cannot be prevented by the co - administration of pharmacological levels of epigallocatechin - 3 - gallate which in turn aggravates the toxicity .
 Chemical: sodium selenite; Chemical: epigallocatechin - 3 - gallate
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: sodium selenite; Chemical: epigallocatechin - 3 - gallate