Electron-cytochemical detection of endogenous nickel in the myocardium in acute carbon monoxide poisoning. Applicability of a new cytochemical technique in forensic medicine.

After acute carbon monoxide poisoning (inhalation, dogs; perfusion, rats; postmortem, humans) endogenous nickel was cytochemically detected in heart muscle by dimethylglioxime reaction. Dimethylglioxime cytochemical reaction, in each case at the COHb level, was always positive in experiments and in postmortem samples. A nickel ion accumulation in the heart muscle above 30 rel.