[Nutrient medium for the isolation and cultivation of pneumococcus].

A culture medium for the isolation and cultivation of pneumococci, produced in a solid or liquid form and based on raw material unsuitable for use as foodstuff (human placenta), has been developed. The amino acid composition of the medium has been studied. The medium has been found to contain 19 amino acids, to be free from ballast serum proteins and blood, and to ensure the good growth of pneumococci isolated from pathological material, the formation of the normal capsule, as well as active biological properties. The medium has proved to create elective and selective conditions enhancing the effectiveness of investigations and simplifying the isolation of pneumococci in the microbiological examination of patients.