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Biomedical subjects

D S Feingold

Publications and source records attributed to D S Feingold.

135 records · Page 8Linked to original sources
PubMed1967

Interferon production in mice by cell wall mutants of Salmonella typhimurium.

The interferon response elicited by Salmonella typhimurium mutants in mice is not dependent on the presence of a complete cell wall lipopolysaccharide. In fact, a mutant (G30/C21) which has lost all the polysaccharide side chains and sugars of the O antigen and contains only 2-keto-3-deoxyoctonate and lipid is indistinguishable in its interferon-stimulating ability from the wild type which possesses a complete O antigen with polysaccharide side chains.

Animals↗
PubMed1966

Transformation of pneumococcal M protein.

Feingold, David S. (The University of Pennsylvania School of Medicine, Philadelphia), and Robert Austrian. Transformation of pneumococcal M protein. J. Bacteriol. 92:952-955. 1966.-Antisera prepared with vaccines of noncapsulated pneumococci of a given M protein type and absorbed with organisms of heterologous M protein type agglutinated specifically the homologous organisms. Specific anti-M protein sera can be used as selective reagents to permit isolation of organisms of heterologous M protein type from mixed populations. This capacity of anti-M protein sera was employed to facilitate recovery of intraspecific M protein transformants of pneumococcus. Attempted interspecific transfer of group A beta-hemolytic streptococcal M protein to pneumococcus by means of transformation reactions, however, was not accomplished.

Agglutination↗