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. 1971 Jan;105(1):284–290. doi: 10.1128/jb.105.1.284-290.1971

Filterability of Streptococcal L-Forms

Priscilla B Wyrick 1, Harry Gooder 1
PMCID: PMC248352  PMID: 4925122

Abstract

The filterability of the broth-grown stable L-form derived from Streptococcus faecium F24 was tested by filtration under the influence of varying amounts of applied pressure. A decrease in the pore size of the filter resulted in a corresponding decrease in viable count, but no major effect was noted due to the different pressures applied. Serial filtration of a deoxyribonuclease-treated L-form culture in the mid-logarithmic phase of growth resulted in recovery of viable L-forms from the 0.45-μm filtrate but not from the 0.22-μm filtrate. It is possible that disruption of the L-form bodies with release of small viable elements had occurred. Protoplasts, diluted in an osmotic stabilizer, were filtered similarly; L-forms could be grown from the filtrate passing through the filters of 0.45 μm or greater. Filtration of the parent streptococci gave rise to streptococcal colonies from the 1.2-μm filtrate only.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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