Abstract: Procedure for the specific isolation of total DNA content of bacterial germs of different samples, in the course of which the cells are lysated, the DNA content of the lysate is bound selectively, it is washed and then the desalinated linear polymer nucleic acid is eluted from the binding surface in an aqueous solution. Before cell lysis the nonviable bacterial cells are separated from the viable cells on the basis of their different cell surface physical-chemical characteristics, the viable cells of the sample are kept and then lysated using a mechanical and/or enzymatic, favorably lysozyme enzymatic method. After this exclusively double-stranded DNA deriving from the lysate of viable cells is bound on a —SiO2—TiO2— matrix containing chemically activated —OH and dodecylamine groups, and after washing it, the desalinated linear polymer nucleic acid is eluted in an aqueous solution.

Abstract: The invention relates to a procedure for biphasic preparation of liposomes, in the course of which technically simple and cheap mechanical mixing methods are used to commingle non-polar organic phase containing an individual mixture of natural and synthetic phospholipids and polar aqueous (buffer) phase not miscible with it, resulting in a liposome emulsion of a unique structure. Furthermore, the invention comprises embodiments of the procedure related to the in vitro diagnostic use of liposomes prepared in this way, when protein type active components are anchored to the surface of liposome membranes without application of any detergents and non-protein type active components are simply mixed with the liposome emulsion of a unique structure. In one of the possible embodiments of the procedure a Prothrombin Time (PT) reagent is prepared. Another possible embodiment of the procedure is the preparation of an activated partial thromboplastin time (APTT) reagent.

Abstract: Procedure for the specific isolation of total DNA content of bacterial germs of different samples, in the course of which the cells are lysated, the DNA content of the lysate is bound selectively, it is washed and then the desalinated linear polymer nucleic acid is eluted from the binding surface in an aqueous solution. Before cell lysis the nonviable bacterial cells are separated from the viable cells on the basis of their different cell surface physical-chemical characteristics, the viable cells of the sample are kept and then lysated using a mechanical and/or enzymatic, favorably lysozyme enzymatic method. After this exclusively double-stranded DNA deriving from the lysate of viable cells is bound on a —SiO2—TiO2- matrix containing chemically activated —OH and dodecylamine groups, and after washing it, the desalinated linear polymer nucleic acid is eluted in an aqueous solution.