contraction strain
1.While in 0.3,1.0 and 3.0 mg/ml group,the Ecr could enhance the contraction range and strain,butnot change contraction frequency of the guinea-pig ileum in vitro,P<0.01.Ecr showed dose-dependent spasmogenicity on Guinea-pig ileum in vitro.
2.A sudden, involuntary, spasmodic muscular contraction causing severe pain, often occurring in the leg or shoulder as the result of strain or chill.
3.After the treatment of Ecr,the Ecr could enhance the contraction range in 0.1 ml/kg group,P<0.05,but not change the strain and frequency of the guinea-pig ileum in vitro;
