[Soluble metabolic antigens of Trichinella spiralis: their isolation and characteristics].

Cultivation of Trichinella muscular larvae, purified by centrifugation in 20 ...

[Intrastrain heterogeneity of Trichinella spiralis: a sedimentation analysis].

Intrastrain heterogeneity of muscular larvae of trichinellids has been revealed in experiments of free sedimentation and isopyknic division in the density gradient of saccharose, the presence of which is confirmed by the study of morphological characters and infection activity. The presence of intrastrain heterogeneity indicates the necessity of introduction of standard technique for studies of biological characters of different strains of trichinellids.

[A method and device for measuring the levels of microscopic objects in suspension].

The major drawback of the routine methods for measuring the suspension concentrations with a microscope is the predominance of the examined area where the particles are concentrated beyond the microscope visual field. To make the examination more convenient, short, and accurate, it is recommended that the suspension particles contained in a certain volume be concentrated with the use of a camera, shaping them as a truncated cone on its smaller foot, equal to a single visual field of the microscope, and there these particles be scintillated.