Primary culture of mouse embryonic spinal cord neurons: cell composition and suitability for axonal regeneration studies.

Primary culture is an effective experimental model to study molecular mechanisms that drive axonal regeneration after central nervous system injury. However, the culture of spinal cord (SC) cells remains poorly characterized. Here, we have analyzed the cell composition of a primary SC culture during its maturation.

[Development of national and international standards of population age distribution for medical statistics, health-demographic analysis and risk assessment].

The current European standard (CES) and the World population age distribution standard is widely used in medical and demographic studies, performed by international (WHO, etc.) and national organizations. The Russian Federal Service of States Statistics (RosStat) uses CES in demographic yearbooks and other publications.

Photoemission Spectra and Electronic Properties of KxC60.

Photoemission spectra of vacuum deposited layers of C(60), before and after exposure to K vapor, show that the K donates its conduction electron into the band derived from the lowest unoccupied molecular orbital. A compound with composition of K(3)C(60), corresponding to the maximum conductivity, has been prepared. In it the potassium atoms presumably occupy both the octahedral and the two tetrahedral interstitial sites of the face-centered-cubic (fcc) C(60) structure.

[The level of postvaccinal immunity to diphtheria, tetanus and poliomyelitis in relation to the number of inoculations].

The work was aimed at the comparative study of the intensity of immunity to diphtheria, tetanus and poliomyelitis, depending on the number of injections of adsorbed diphtheria-pertussis-tetanus (DPT) vaccine and poliomyelitis vaccine, for the purpose of finding out the possibility of reducing the antigenic load given to children without diminishing the intensity of immunity. To determine the level of immunity to diphtheria and tetanus, 1900 children under school age were serologically studied by the micromethod in the passive hemagglutination test. The intensity of immunity to poliomyelitis virus was studied in 333 children by means of the neutralization test.

[Possible serodiagnosis of pertussis infection by an immunoenzyme method].

The sera of children and adults with a history of pertussis, as well as the sera of children immunized in three injections, have been studied in the enzyme immunoassay. The levels of antibodies to Bordetella pertussis protein and lipopolysaccharide, and to disintegrated B. pertussis cells have been determined; a serum titer of 1:1,600 and higher is considered as a criterion for the serological diagnosis of pertussis.

Vidicon-camera parallel-detection system for angle-resolved electron spectroscopy.

A multiple-angle, parallel detection scheme for ultraviolet photoemission spectroscopy and LEED has been developed based on a minicomputer-controlled vidicon camera and a LEED-grid energy analyzer. This system allows rapid data acquisition and display so that one can obtain energy spectra over a 70 degrees x70 degrees collection geometry with +/-1.5 degrees resolution in 30-40 min, or collect the intensities of all visible LEED beams in a few seconds.