Intergenic and genic sequence lengths have opposite relationships with respect to gene expression.

Eukaryotic genomes are mostly composed of noncoding DNA whose role is still poorly understood. Studies in several organisms have shown correlations between the length of the intergenic and genic sequences of a gene and the expression of its corresponding mRNA transcript. Some studies have found a positive relationship between intergenic sequence length and expression diversity between tissues, and concluded that genes under greater regulatory control require more regulatory information in their intergenic sequences.

[Late complications in patients having undergone a gastric resection].

A total of 37 patients who had undergone partial gastrectomy for duodenal or gastric ulcers, were investigated. The postoperative periods ranged from 5 to 28 years. All the patients were subjected to comprehensive clinical and neurologic examinations.

[Structural changes in the brain in transient cerebral circulatory disorders detected in vivo by using computerized axial tomography and radioisotope cerebral scintigraphy].

Computer-aided axial tomography and radioisotopic (with 99mTc) scintigraphy of the brain were used for examining 54 patients with transient cerebral circulation disturbances, the clinical manifestations of which subsides within a period of less than 24 hours. In 28% of the patients, structural changes in the brain were revealed. The computer-aided tomography appeared to be more informative for their discovery, than the radioisotopic scintigraphy.