RESUMO
The lipolysaccharides of two mutants of Salmonella minnesota with known chemical structure were investigated by X-ray methods. Both thickness of the lipopolysaccharide layer and arrangement of the molecular components could be estimated. Using these informations a space-filling model of the structure was built.
Assuntos
Lipopolissacarídeos , Salmonella/análise , Lipopolissacarídeos/isolamento & purificação , Modelos Moleculares , Conformação Molecular , Mutação , Difração de Raios XRESUMO
Fat-praeparates of cow and pork have been investigated by small-angle X-ray scattering methods. Dependent on the temperature these fats show distinct X-ray interference patterns in the small-angle region. Hence complete phasediagrams of the fats in the temperature region between -20 degrees C and 55 degrees C could be estimated. Using the intensity distribution of the X-ray scattering the electron-density distribution along one direction of the ground-cells of the fat crystals were calculated.
Assuntos
Cristalização , Gorduras , Espalhamento de Radiação , Animais , Bovinos , Modelos Estruturais , Suínos , Raios XRESUMO
According to plain chest roentgenography correlated to needle biopsies the following grades in the course of rejection after single lungtransplantation could be evaluated. 1) Begin of rejection: perihilar alveolar infiltrate. 2) Increase of the infiltrates (positive Airbronchogram). 3) Almost total consolidation of the graft. 4) Complete consolidation of the graft, mediastinal hernia caused by the own lung.
Assuntos
Rejeição de Enxerto , Transplante de Pulmão , Animais , Cães , Terapia de Imunossupressão , Pulmão/diagnóstico por imagem , Pulmão/patologia , Radiografia , Transplante HomólogoRESUMO
A patient with isolated tumourous pulmonary amyloidosis was seen and surgically treated in our clinic. The roentgen morphology of this extremely rare condition is described and the cases published in the literature are reviewed. Knowledge of this disease makes the radiological diagnosis easier and is of importance to the surgeon in planning treatment.