Lancefield group

Lancefield group
Lance·field group 'lan(t)s-.fēld- also Lance·field's group -.fēldz- n any of the serologically distinguishable groups into which most streptococci can be divided and which are based on the polysaccharide antigens present in the streptococcal cell walls see GROUP A, GROUP B
Lancefield Rebecca Craighill (1895-1981)
American bacteriologist. Lancefield specialized in immunochemical studies of streptococci. In 1928 she published a study of the chemical composition and antigenicity of hemolytic streptococci. In 1933 she introduced a new method of classifying streptococci into groups according to the ability of antigens in their cell walls to induce the formation of antibodies which caused precipitation of the streptococci from solution. These groups are now known as the Lancefield groups.

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one of the groups of hemolytic streptococci in the Lancefield classification.

Medical dictionary. 2011.

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  • lancefield group — n(t)ˌsfēld noun also lancefield s group or lancefield grouping Usage: usually capitalized L Etymology: after Rebecca Lancefield b1895 American bacteriologist : one of the serologically distinguishable groups (as group A, group B …   Useful english dictionary

  • Group A — ā n the Lancefield group of beta hemolytic streptococci that comprises all strains of a species of the genus Streptococcus (S. pyogenes) and that includes the causative agents of pharyngitis, scarlet fever, septicemia, some skin infections (as… …   Medical dictionary

  • Group B — bē n the Lancefield group of usu. beta hemolytic streptococci that comprises all strains of a species of the genus Streptococcus (S. agalactiae) and that includes the causative agents of certain infections (as septicemia, pneumonia, and… …   Medical dictionary

  • lancefield's group — noun see lancefield group …   Useful english dictionary

  • lancefield grouping — noun see lancefield group …   Useful english dictionary

  • group A — noun the blood group whose red cells carry the A antigen • Syn: ↑A, ↑type A • Hypernyms: ↑blood group, ↑blood type * * * noun Usage: usually capitalized G&A, often attributive : the …   Useful english dictionary

  • group B — noun the blood group whose red cells carry the B antigen • Syn: ↑B, ↑type B • Hypernyms: ↑blood group, ↑blood type * * * noun Usage: usually capitalized G&B, often attributive : t …   Useful english dictionary

  • Lancefield system — (group; lans feld) One of the serologically distinguishable groups (as group A, group B) into which streptococci can be divided …   Dictionary of microbiology

  • Lancefield classification group — Lance·field classification, group (lansґfēld) [Rebecca Craighill Lancefield, American bacteriologist, 1895–1981] see under classification and group …   Medical dictionary

  • Group B streptococcal infection — DiseaseDisorder infobox Name = Streptococcus, group B, as the cause of diseases classified to other chapters ICD10 = ICD10|B|95|1|b|95 ICD9 = Infection with Group B Streptococcus (GBS), also known as Streptococcus agalactiae and more colloquially …   Wikipedia

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