11085
The results indicated that SKF83959 dramatically promoted the binding of ( 3 ) H ( + ) - pentazocine ( a selective sigma - 1 receptor agonist ) to the sigma - 1 receptor in brain and liver tissues but produced no effect on ( 3 ) H - progesterone binding ( a sigma - 1 receptor antagonist ) .
 Chemical: SKF83959; Chemical: ( 3 ) H ( + ) - pentazocine; Chemical: ( 3 ) H - progesterone
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: SKF83959; Chemical: ( 3 ) H ( + ) - pentazocine; Chemical: ( 3 ) H - progesterone