DISBACTERIOSIS – any qualitative or quantitative changes of the human  and animal microflora typical for the given biotope, which take place as a result of the impact of different exogenous or endogenous factors on the macro- and microorganisms, involve the clinical implications from the part of microorganism or arise from any pathological process of the body.  

DYSBIOSIS – microbiological disbalance of the body, which with the time shows as local symptoms  and later as systemic disturbance  aggravating the course of different diseases.  

INTESTINAL DISBACTERIOSIS a microbiological notion characterizing the disturbances in the qualitative composition and quantitative relationship of bacterial representatives of the intestinal microflora.
PROTECTIVE INTESTINAL MICROFLORA – the flora represented by bifidus bacteria, lactic bacteria, wholesome colibacilli.
NORMAL FLORA — a complex of microorganism associations being typical for the definite biological species, which natural life activity proceeds in the microorganism organs and tissue communicating with the ambient environment (incorporates the bifidus bacteria, lactobacteria and colibacilli).
PATHOGENIC INTESTINAL MICROFLORA – the flora represented by salmonella, shigella, enteropathogenic colibacilli, yersinia, clostridia, helicobacter.
PREBIOTICS – the indigestible food components capable of producing the favorable effect on the body by selective stimulation of growth and/or activity of the normal intestinal microflora representatives.
PROBIOTICS — preparations and food products incorporating the substances of microbial and amicrobial origin, which when administered naturally produce the beneficial effect on the  physiological functions and biochemical reactions of the host organism by optimization of its microecological status (i.e. any live, killed microorganisms, their structural components, metabolites, substances of different origin exerting positive impact on the host microflora functioning).

SYNBIOTICS  –  a combination of the prebiotics and probiotics.
OPPORTUNISTIC PATHOGENIC INTESTINAL MICROFLORA – the flora causing disease of the people with low resistance in definite conditions, which is represented by   Proteus, coagulase-positive staphylococci, hemolytic streptococci, spore-bearing anaerobes.
FUNCTIONAL NUTRITION — the products or substances of natural origin included into the human diet to produce the  regulation effect on the organism as a whole or on its definite systems for their function regulation.
LACTOBACILLUS BULGARICUS  –  a unique microorganism able to provide the lactic acid fermentation. This species of microorganism is not typical for the normal intestinal microflora, however it exhibits the high biological activity in respect to the pathogenic and opportunistic pathogenic intestinal microorganisms, considerably accelerates their destruction and by doing so provides rapid and efficient stocking of the intestines with acidophilic lactobacteria and bifidus bacteria. Results of the completed research work demonstrated that during fermentation the Lactobacillus bulgaricus form the substances, which activate the immune reactions and raise the organism resistance to the disease agents. During the milk fermentation with Lactobacillus bulgaricus the lactose breaks down to glucose, galactose, lactic acid. Proteolytic ferments of Lactobacillus Bulgaricus facilitate acceleration of the metabolic processes with production of  amino acids, di- and tri-polypeptides and thus make the process of milk protein  assimilation easier for the organism.