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Evaluation of age of unknown deceased persons belongs to the most important ways to identification. For the time being, morphological methods are used, namely evaluation of age according to Gustafson's method from tooth grindings or by macroscopical estimation of abrasion, transparency of root dentine, alveolar atrophy and number of missing teeth. Evaluation of the data can be influenced by an individual failure and experience showed an age related decrease of precision. Recently, some papers occurred estimating a relation of D, L-forms of aspartic acid which depends on the age with a significant precision.

Estimation of relation of D,L-forms aspartic acid has been recently used for an evaluation of age. It represents a relatively new method based on analysis of hydrolyzed dentine. Its amino acids are derived and analyzed by gas chromatography or liquid chromatography on a chiral column.

A considerable relation between myocardial fatty infiltration (lipomatosis) and ischemic lesion of myocardium was proved by authors else where. This time, polychlorinated biphenyls (PCB) wee studied in subepicardial fat as well as in subcutaneous fat in thorax and abdomen of deceased person after sudden and violent death. For the time being, most published results concerned the abdominal subcutaneous fat. All the published results showed high concentrations of PCB were proved in subcutaneous fat tissue from thorax and abdominal area and specially in subepicardial fat. Topical relation of PCB deposits and heart muscle was direct in all analyzed case because of fatty infiltration of myocardium. Obviously, a direct toxic effect of PCB on myocardium can take place in stress lypolysis e.g. associated with heart infarct (in some animals hydropericardium and impairment of parenchymatous organs were observed) and prognosis of patients with ischemic lesion can get worser.