Determination of plasma free fatty acids, free cholesterol, cholesteryl esters, and triacylglycerols directly from total lipid extract by capillary gas chromatography.

An accurate capillary gas chromatographic method using different internal standards for determining free fatty acids, cholesterol, cholesteryl esters, and triacylglycerols in plasma and other biological sources is described. It is designed to give information about species composition and, consequently, more detailed information about changes in lipid metabolism of patients suffering from metabolic disorders. After plasma extraction the lipids, except phospholipids, are directly examined without any further derivatization.

[Electronic volume analysis of cell nuclei in the gastric mucosa].

A trial was conducted for mechanical and objective analysis of gastric mucosal specimen concerning suspicion of malignancy by means of electronic nuclear volume analysis. 16 specimen of normal and 10 specimen of malignant gastric mucosa were investigated. The mean nuclear volume was 37.