Milieu de culture pour Neisseria meningitidis avec extrait de soja en tant que source d'acides aminés et dépourvu de complexes protéiques d'origine animale
The invention relates to a medium for culturing pathogenic bacteria to produce an immunogenic factor. The medium comprises non-animal derived proteinaceous material. The invention also relates to the use of the medium to cultivate pathogenic bacteria, obtaining immunogenic factors from the bacteria being cultivated and preparing vaccines using the immunogenic factors.