5 Micro-organisms and cultures of micro-organisms, in particular probiotic preparations for medical use in the nature of probiotic lactic bacteria, probiotic bifidobacterium bacteria to be administered to human beings and to reared animal species, for medical and veterinary use; micro-organisms and cultures of micro-organisms, in particular probiotic preparations for medical use in the nature of probiotic lactic bacteria, probiotic bifidobacterium bacteria capable of inducing a metabolic action able to affect cholesterol levels in blood; specialty pharmaceuticals containing micro-organisms and cultures of micro-organisms, in particular probiotic preparations for medical use in the nature of probiotic lactic bacteria, probiotic bifidobacterium bacteria for treating the intestinal bacterial flora, for restoring the balance of the intestinal bacterial flora when changed in the course of treatment with antibiotics or chemotherapy, for treating acute and chronic gastro-intestinal diseases caused by a change in the intestinal bacterial flora, for treating intestinal dismicrobic syndromes, in particular in diseases linked to changes in the bacterial flora such as diarrhea, gastroenteritis, non-specific enteritis, colitis, ulcerous colitis and Crohn's disease, in the form of pharmaceuticals for oral application, in particular capsules, compress, solutions, suspensions, granules, granulates in dried or freeze-dried form, food supplements, food supplements for medical use containing micro-organisms and cultures of micro-organisms, in particular probiotic lactic bacteria, probiotic bifidobacterium bacteria to be administered to human beings; dietary supplements; food supplements containing microorganisms and cultures of microorganisms, in particular probiotic lactic bacteria, probiotic bifidobacterium bacteria to be administered to human beings, not for medical use; symbiotic dietary supplements containing micro-organisms or cultures of micro-organisms, in particular probiotic lactic bacteria, probiotic bifidobacterium bacteria and prebiotic fibres