[Effect of diet containing soil dust on morphological examination of liver in experimental rats].

Investigations refer to the influence of fodder containing soil dust as one of the ingredients on morphology of the liver and the weight of experimental animals. Fodder containing soil dust was given to animals for various periods of time, the longest was 18 weeks. The results indicate that the intensity of morphological changes in the liver depends on the time of giving fodder.

[The influence of coal ashes and soil dust on the activity of two selected hydrolytic enzymes in the liver of laboratory animals].

The effect of a single intratracheal application of the electroenergetic ashes and the soil dust on the liver cell was studied by means of the histoenzymatic methods for the determination of the activities of chosen hydrolases (AcP, E.C. 3.

[Effect of short-term exposure to ash from electric power plants on histochemical reactions of succinate dehydrogenase and lactate dehydrogenase in the lungs of experimental animals].

Histochemical studies of the activity of succinic dehydrogenase (SDH) and lactic dehydrogenase (LDH) in the pulmonary tissue of experimental animals which were given four coal ashes issued from different thermal-electric power stations: group VII--from the thermal-electric power station Siekierki (Warsaw), group VIII--from Wrocław, group IX--from Leg (Cracow) and group XI--from Lódź, were carried out. In particular ash samples the content of trace elements and free silica was determined. The studies yield the following conclusions: 1.