[Interaction of eukaryotic aminoacyl-tRNA-synthases with polyribosomes].

Properties of rabbit liver tissue aminoacyl-tRNA synthetases, associated with polyribosomes, were studied under conditions of normal state and within 12 hrs after simulation of myocardium infarction. Under conditions of myocardium infarction the activity of some forms of aminoacyl-tRNA synthetase was decreased in polyribosomes and protein fractions, liberated from polyribosomes by means of washing with buffer containing 0.5 M KCl.

[Ways to increase the information value of ultrasonic studies in the diagnosis of intraocular tumors].

The paper discusses possibilities to increase information value of ultrasound investigations in diagnostics of intraocular tumors by means of a developed informative system of acoustic diagnostics ISAD-2 on the basis of a microcomputer "Electronika-60" (OVK-2) and broad-band ultrasound piezo-transformer with a working frequency from 2 to 20 mHz. Examination of 50 patients (50 eyes) with suspected intraocular tumors resulted in enucleation of the eye ball in 45 patients (45 eyes). Comparison of ultrasound and histomorphologic investigations revealed a correlative connection between the structure of intraocular tumor and the texture of their radio-frequency echograms as well as with relative frequency dependence of ultrasound attenuation in it.