25681
We investigated the diurnal expression of clock genes and clock - controlled genes ( CCGs ) in 3 - hour intervals for a 24 - h period in the livers of male streptozotocin ( STZ ) - treated rats , male spontaneous type 1 diabetic LEW . 1AR1 - iddm ( Iddm ) rats , and Iddm rats treated for 10 days with insulin .
 Chemical: streptozotocin; Chemical: STZ
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: streptozotocin; Chemical: STZ