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Blockade of endothelial - mesenchymal transition by a Smad3 inhibitor delays the early development of streptozotocin - induced diabetic nephropathy .
 Chemical: streptozotocin; Disease: diabetic nephropathy
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: streptozotocin; Disease: diabetic nephropathy