Modified preoperative score to predict disease-free survival for hepatocellular carcinoma patients with surgical resections.

Background: No prognostic models specific to hepatocellular carcinoma patients receiving surgical resection have been considered strong and convincing enough for survival prediction thus far, and there are no models including only preoperative predictors. We derived a nomogram to predict disease-free survival in a previous study.

Aim: To simplify our score and compare research outcomes among other scoring systems.

Determination of the degree of deacetylation of chitosan by capillary zone electrophoresis.

In this study we have developed a capillary zone electrophoresis (CZE) method for the determination of the degree of deacetylation (DDA) of chitosan. The electrophoretic mobilities of chitosans were measured by using the optimized CZE conditions. An internal standard, hexammine cobalt(III) chloride, was used to improve the precision of the electrophoretic mobility measurement.