| 摘要 |
A process for preparing a product having a biological activity towards an animal, human or vegetable tissue to be treated, comprising the isolation of a bacterium from the intestines of a lower animal, a mutation of said bacterium in a liquid medium, the industrial culture of said mutant bacterium (strain No. NCIB 11144 filed at the National collection of Industrial Bacteria) in a nutritious nitrogen containing medium, containing ammoniacal iron citrate and at least one phosphate, a portion of the nitrogen of said industrial culture medium being provided by an animal, human or vegetable tissue of the same source as the tissue to be treated by the product is disclosed. |
