[Exfoliative cytological diagnosis of lung cancer with bronchoscopic material].

Analysis of the results of exfoliative cytological diagnosis of lung diseases from fibrobronchoscopic materials in the presence of the affected bronchial mucosa made it possible to verify lung cancer in 75.9% of cases and to give a descriptive reply due to the fact that cytological specimens were of no diagnostic value. Further examinations of transthoracic puncture specimens and clinical and X-ray findings of patients from the latter group could reveal an inflammatory process in two thirds of cases and peripheral lung cancer in a third.

[Primary multiple malignant neoplasms in patients with skin melanoma].

The problem of primary multiple malignant tumor (PMMT) of skin melanoma in Ukraine is analyzed. During the period from 2000 to 2006, 16760 cases of skin melanoma have been diagnosed, and in 873 patients from them PMMT has been registered. So, the part of the patients with multiple tumors among all patients with skin melanoma was 5.

[Cytologic diagnosis of hepatic tumors by examining puncture bioptates].

Data on cytological diagnosis of hepatic tumors (1996-2006) are evaluated. The potential of cytological examination for identification of the biological mechanism and histological pattern of such malignancies were demonstrated. Cytological examination of puncture bioptates established such diagnostic features as sensitivity (90%), specificity (88%), and effectiveness (89%) as well as prognostic significance of positive (99%) and negative (41%) results.

Incidence of viral hepatitis B and vaccination in the Arkhangelsk region, Russian Federation.

Introduction: Hepatitis B (HB) incidence in Russia decreased from 36.6 in 1997 to 19.8 per 100,000 population in 2002.

[Theoretical analysis of inductive effects in higher plant photosynthesis].

The proposed mathematical model of the light stages of photosynthesis in higher plants takes into account the regulatory process of excitation energy redistribution between photosystems depending on the redox state of electron carriers. Nonmonotonic changes in the intensity of pigment fluorescence upon switching on the excitation light (delayed fluorescence induction) are described. The time required for fluorescence to reach its peak intensity and the degree of fluorescence quenching depending on light intensity are analyzed.