24632
The representative antiprogestin EC304 was found to inhibit in vitro tumorigenicity in a dose - dependent fashion in T47D cells by a colony formation assay at 1 and 10nM concentrations .
 Chemical: EC304
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: EC304