Growth characteristics of group A streptococci in a new chemically defined medium

I Van de Rijn, RE Kessler - Infection and immunity, 1980 - Am Soc Microbiol
I Van de Rijn, RE Kessler
Infection and immunity, 1980Am Soc Microbiol
A new chemically defined medium for the growth of group A streptococci has been
formulated. The advantages of this new medium over previously described defined media
are:(i) rates of growth (ie, doubling times) of 20 strains were comparable to the rates of
growth in complex media;(ii) each strain grew to a higher culture density in the new defined
medium than in complex media;(iii) transfer from complex media with small inocula was
possible without any prior adaptation regimen; and (iv) the production of virulence factors …
A new chemically defined medium for the growth of group A streptococci has been formulated. The advantages of this new medium over previously described defined media are: (i) rates of growth (i.e., doubling times) of 20 strains were comparable to the rates of growth in complex media; (ii) each strain grew to a higher culture density in the new defined medium than in complex media; (iii) transfer from complex media with small inocula was possible without any prior adaptation regimen; and (iv) the production of virulence factors (i.e., M protein and hyaluronic acid) and extracellular enzymes during growth in this new medium was comparable to that in complex media.
American Society for Microbiology