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In the work there are shown the results of a "case control" study carried out in a children collectivity (preschool children and school-children), regarding the action of an aqueous propolis extract, NIVCRISOL, in acute and chronic inflammatory diseases of the upper airways. The preparation, which had a rich content of flavonoids, was administered to a(More)
Purified influenza virus A(H1N1) was sonicated in a continuous flow Ultrasonics F600 device at 20 kHz, 600 W. Electron optic examination of samples collected at different time intervals revealed morphologic alterations of the virus particles, gradually increasing in intensity: detachment of surface components, disruption of the viral corpuscles and of their(More)
The morphological changes caused by the interaction of influenza virus A(H1N1) with three fluorescent aromatic compounds (a vinyl-sulfonic and an isocyano naphthalic acid derivative and the 4-acetylamino-naphthalene-1,8-dicarboxylic acid) were studied in the electron microscope. The intensity and type of the alterations depend on the chemical structure of(More)
Two types of cell cultures, BSC and HE-p2, have been studied from the microelectrophoretic point of view. Determinations have been made for infected cells (collected at 48 or 72 hours after infection) and for control cells, immediately after their separation from the culture, or after preserving them for 24 hours or more in migration buffer. The(More)
Different possibilities of graphic representation of the results obtained from investigations on the involvement of some viruses in the malignant and nonmalignant human pathology are analysed. The Harvard Graphics package available in many IBM compatible computers was used. Owing to its several graphic options and access to the drawing area it was preferred(More)
The possibilities of the main physical methods for the analysis of molecular interactions in solution are discussed on the ground of recent data of the literature. Spectrophotometry, (micro)cryoscopy and the isopiestic method are presented in more detail. These methods were applied to several dyes of common use in viral biology studies and to some new(More)
Complex epidemiological investigations carried out in the affected zone, enabled the author to notice that familial endemic nephropathy (FEN) starts, in the population, as an asymptomatic renal involvement which affects all the age groups from the first decade to the ninth, its incidence increasing with age. Clinically, early renal involvement represents(More)