1721
Earlier studies have demonstrated that antagonism of sigma1 receptors attenuates the convulsive , lethal , locomotor stimulatory and rewarding actions of cocaine in mice .
 Disease: convulsive; Chemical: cocaine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Disease: convulsive; Chemical: cocaine