[Immunochemical characteristics of echinococcal fluid used for preparing immunodiagnostic preparations].

Protein content, antigenic activity, presence of enzymatic (carboxylesterase) activity and fractional content were determined by high performance liquid chromatography in 6 samples of echinococcal fluid from cysts isolated from sheep, cattle and pigs. Significant differences between the contents of above-mentioned characteristics in various echinococcal fluid samples were observed. The highest content of diagnostically valuable components was revealed in cysts isolated from sheeps' liver. Authors come to the conclusion on the necessity of choosing criteria of assessment of echinococcal fluid samples' fitness for echinococcosis diagnosis.