8491
Animals were allotted into groups of sham operated control , vas occlusion with RISUG ( 5 - 7 mu l ) for 360 days and reversal by DMSO ( 250 - 500 mu l ) and 5 % NaHCO3 ( 500 mu l ) .
 Chemical: DMSO; Chemical: NaHCO3
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: DMSO; Chemical: NaHCO3