9859
The present study was undertaken to evaluate the protective effect of aqueous extract of Corchorus olitorius leaves against Pb - acetate induced toxic manifestation in blood , liver , kidney , brain and heart of Wistar rats .
 Chemical: Pb - acetate
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: Pb - acetate