The results show that the polysaccharide of Cordyceps militaris,which can obviously lengthen maximum lifespan,mean lifespan,and 50 percent individuals lethal date of D.

An study on the relationship between changes of corneal AQP_1 and postmortem interval;

Preliminary study on fluorimetric RT-PCR in estimating postmortem interval in rats;

Studies on deduction of the postmortem interval based on the stability of mRNA;

The characteristics and inspiration of death time distribution of hospitalized elderly patients;

Several problems of estimating death time by measuring the amount of DNA with image analysis technique;

Relationship between death time and yin-yang in patients with malignant tumor;

Estimation of postmortem interval and time of death by maggot fly;

Analysis on the cause of death and time of death of 3296 inpatient cases died during being hospitalized;

It is a common way for estimating of time of death in forensic science by the extent of gastric emptying, but this method may be less accurate in sometimes.

This study may be used in PMI estimation.

Conclusion This study may be used in PMI estimation.

In the present study,FTIR spectroscopy was applied to observe the process of postmortem degradation in rat s brain and a lot of useful data for the estimation of postmortem interval(PMI) were provided.