Abstract
Summary
A rapid and heavy growth of meningococcus developed on an agar medium containing tryptic digest of casein, dextrose and buffer at pH 7.4-7.6. However, this medium failed to support growth of the gonococcus. Addition to the medium of a small amount of cystine, however, stimulated growth of this organism. The growth of gonococcus on this casein digest medium, with cystine, was as heavy as that of meningococcus. The growth of meningococcus did not seem to be improved by this addition of cystine to the medium.
Get full access to this article
View all access options for this article.