Susan J. Millar

Learn More
The ultrastructures and surface protein profiles of aerobically cultured Actinobacillus actinomycetemcomitans (Haemophilus actinomycetemcomitans) differed from those of cells cultured anaerobically. Similar ultrastructural differences were also observed when aerobic and anaerobic cultures of a strain of Escherichia coli were compared. These results suggest(More)
Two separate species of lipopolysaccharide (LPS) from Bacteroides gingivalis 381 have been isolated. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis demonstrated not only the heterogeneity of each species, but also that they represented high- and low-molecular-weight LPS entities. Although both contained the same carbohydrate and fatty acid(More)
BALB/c mice were immunized with an invasive (A7A1-28) or noninvasive (381) Bacteroides gingivalis strain, Bacteroides intermedius, or Ringer solution. All immunized mice were subsequently challenged with the invasive B. gingivalis strain and examined for septicemia or secondary spread of the infection or both. Mice immunized with the invasive B. gingivalis(More)
Lipoteichoic acid (LTA), extracted from Streptococcus mutans 10449 by hot aqueous phenol, was partially purified by Sepharose 6B column chromatography in 0.01 M sodium acetate, pH 6.0, containing 0.25 M sodium chloride and 0.001 M EDTA. Nucleic acid and polysaccharide were precipitated from the LTA-containing column peak by the addition of 2 volumes of(More)
The effect of lipopolysaccharide preparations from Salmonella enteritidis, Bacteroides gingivalis, and Actinobacillus actinomycetemcomitans on human gingival fibroblasts was studied. Lipopolysaccharide from all sources inhibited fibroblast proliferation in the concentration range of 0.5 to 50 micrograms/ml, with the lipopolysaccharide from A.(More)
In antral mucosa of the mouse stomach, the volume of mucus in mucous cells was measured morphometrically to determine whether this value changes during cell migration from the base of the pit to the surface. Both the volume density of mucous granules (the fraction of cell volume occupied by the granules) and the volume of intracellular mucus were reduced to(More)
  • 1