Conditions for separation of Micavibrio aeruginosavorus ARL-1 from cells and membranes of host-bacteria Pseudomonas aeruginosa have been developed. Differential centrifugation and ficoll density-gradient centrifugation were applied to purify a mixed culture. A fraction localized in the zone of 12-15% ficoll is a sufficiently homogenous suspension of the exoparasite . It meets requirements of purity of the biomass destined for biochemical investigations.
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