19800
HENA activated the BK ( cbv1 + beta 1 ) channels cloned from rat cerebral artery myocytes with a potency ( EC50 = 53 mu M ) similar to and an efficacy ( x 2 . 5 potentiation ) significantly greater than that of LCA .
 Chemical: HENA; Chemical: LCA
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: HENA, LCA 
Answer:
 Chemical: HENA; Chemical: LCA