We report research subjects on the morbid conditions due to various exogenous invasions, iatrogenic damages and suicide. The studies of morbid condition by exogenous invasions are as follows : 1) forensic significance of endocardial
bleeding to diagnosing the causes of death, 2) forensic implication of intramuscular
bleeding of the tongue of the fire victims, 3) stability of
cyanide concentration in blood of the fire victims and the evaluation of the toxic potential, 4) histochemical detection of ABO blood type of the muscle of the fire victims by signal amplification method with
biotinylated tyramide, 5) alcohol detection of purified brain tissue of the drowned victims and the estimation of the amount of drinking, and 6) investigation into unclosing a mechanism of postmortem production of endogenous
gamma-hydroxybutyric acid(GHB). The researches for iatrogenic damages are as follows: 1) iatrogenic ribs fracture due to chest compression during
cardiopulmonary resuscitation, 2) bone marrow
embolism of the lung caused by iatrogenic ribs fracture, and 3) forensic application of
lidocaine of blood and tissues, which is derived from
xylocaine jelly, chemicals for surface
anesthesia, frequently used with the purpose of lubricating effect when intubation tube is introduced into the trachea. The issues of suicide research aiming forensic and clinical application are as follows: 1) forensic significance of blood
nicotine levels of the smokers who committed suicide, 2) forensic availability of muscle
nicotine levels of the purified bodies who have suspected suicide, and 3) forensic value of analysis of
chromogranin A mRNA in autopsy cases with various cause of death to diagnosing suicide.