Quantitative laser-induced breakdown spectroscopy for discriminating neoplastic tissues from non-neoplastic ones

Polyploidy in non-neoplastic tissues.

AIM To investigate the prevalence and amount of polyploidy in fine needle aspiration specimens of the liver, urinary cytospin preparations, and cytospin preparations from pleural and peritoneal fluid. METHODS Cells from 44 liver smears, 48 urine specimens, and 46 pleural and peritoneal aspirations were examined. After Feulgen restaining the DNA content of 100 randomly selected nuclei was dete...

Laser-Induced Breakdown Spectroscopy

Laser Induced Breakdown Spectroscopy

Laser-induced breakdown spectroscopy (LIBS) is a powerful analytical technique that can be used for the detection and characterization of materials. In LIBS, a focused laser beam is used to generate a plasma plume on the surface of solid and liquid samples or inside the sample volume of gases, liquids, and aerosols. Each excited atom in the plasma emits a unique set of spectral lines, particula...

Laser Induced Breakdown Spectroscopy

Esta revisão descreve os aspectos fundamentais, a instrumentação, as aplicações e tendências futuras de uma técnica analítica que se encontra em seu estágio de consolidação e que está em vias de estabelecer o seu nicho entre as técnicas espectrofotométricas modernas. A técnica é denominada Espectroscopia de Emissão em Plasma Induzido por Laser (em inglês, Laser Induced Breakdown Spectroscopy, L...

Metabolism of neoplastic tissue. III. Diphosphopyridine nucleotide requirements for oxidations by mitochondria of neoplastic and non-neoplastic tissues.

In previous publications we reported that oxidative processes of the citric acid cycle in tumor homogenates (29) or mitochondria isolated there from (30) are limited by the loss of diphosphopyridine nucleotide activity and that oxygen consump tion can be restored by the addition of this coenzyme to the medium in relatively high concen tration. The present report represents a further study of th...