[Laboratory studies at an occupational disease clinic].

The authors provide results of hematologic, cytochemical, cytogenetical, microbiologic, cytologic and immunologic studies and describe their role in studying pathogenesis for main occupational diseases of internal organs, nervous system, skin, ENT and other systems. Prospects of clinical laboratory examinations development are using new cellular technologies and novel methods evaluating influence of chemical and physical factors on vital cytoplasmic, nuclear and membrane structures.

[Interaction of poly-2-methyl-5-vinyl-N-ethylpyridinium bromide and heparin studied by means of ultraviolet and infrared spectroscopy].

Antithrombotic properties are induced in polymers used in vascular surgery by modifying their surface chemically by introducing heparin by means of quaternary bases. The authors have studied the interaction of heparin with quaternary polyvinylpyridinium bromide. Optimal conditions for obtaining this complex have been established.