Objective:To compare expression of iNOS on brain tissue in rats model of asphyxia death with other death groups and forensic significance.Methods:The production method of mechanical asphyxia death

hemorrhagic shock death

brain traumatic death and breaks the neck to execute group model;By means of immunohi stochemistry and image analysis technology to determinate the dead rats after each group at different times of iNOS in the brain tissue of expression.Results:iNOS in mechanical asphyxia death

hemorrhagic shock death and brain traumatic death have expressed

breaks the neck to execute was no expression and mechanical asphyxia death group was significantly higher levels than in all levels of other group

each group of 0h expression all slightly bottom to 6h

12h

24h

Also each group of 6h

12h

24h expression tends to the identical level.Conclusion:This discovery

in the 24 hours after the death of brain tissue iNOS expression can be inferred from the asphyxial death of a biological indicators.