20535
Since 1985 , when Heyliger et al . , first demonstrated a serendipitous discovery that oral administration of 0 . 8 mg / ml of sodium orthovanadate in drinking water to streptozotocin - induced diabetic rats resulted in normoglycemia , numerous extensive studies have been pursued on the anti - diabetic and insulinomimetic actions of vanadium .
 Chemical: sodium orthovanadate; Chemical: streptozotocin; Chemical: vanadium
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 orthovanadate; Chemical: streptozotocin; Chemical: vanadium