It refers to a compound composed of bacteria strains of eucharacterium conservation. Its RNR 16 sequence and SEQ ID number are: 4. It is characterized by that the bacteria strains are feasible and can colonize the intestine in part or in whole. This ingredient is useful for the treatment or prevention of young people, such as breast cancer, lung cancer, liver, colon cancer, multiple sclerosis, arthritis, lupus erythematosus, Crohn's disease, celiaca's disease, asthma, obstructive pulmonary disease, etc.Se refiere a una composicion que comprende una cepa bacteriana de la especie Eubacterium contortum, que tiene una secuencia de ARNr 16 s identica a la SEQ ID NO: 4, caracterizada porque la cepa bacteriana es viable y puede colonizar parcial o totalmente el intestino. Dicha composicion es util para el tratamiento o la prevencion de uveitis, cancer de mama, pulmon, higado, colon, entre otros； esclerosis multiple, artritis, lupus eritematoso, enfermedad de Crohn, enfermedad celiaca, asma, enfermedad pulmonar obstructiva, entre otros.
