- Lancefield classification group
- Lance·field classification, group (lansґfēld) [Rebecca Craighill Lancefield, American bacteriologist, 1895–1981] see under classification and group.
Medical dictionary. 2011.
Lancefield classification group
Look at other dictionaries:
Lancefield classification — a classification of the Streptococcus bacteria based on the presence or absence of antigenic carbohydrate on the cell surface. Species are classified into the groups A S. Most species causing disease in humans belong to groups A, B, and D. R. C.… … Medical dictionary
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… … Medical dictionary
group A B C (etc.) streptococci — streptococci distinguished by the Lancefield classification into groups (Lancefield groups) on immunologic grounds according to the presence in the cell wall of specific antigenic carbohydrates called C carbohydrates. Those causing human… … Medical dictionary
classification — A systematic arrangement into classes or groups based on perceived common characteristics; a means of giving order to a group of disconnected facts. adansonian c. the c. of organisms based on giving equal weight to every character of the… … Medical dictionary
Lancefield precipitation test — a ring precipitation test for identification and classification of streptococci. Group specific antibody reacts in vitro with group specific polysaccharide to produce a ring of precipitation where the two reagents react at the interface … Medical dictionary
Rebecca Lancefield — Rebecca Craighill Lancefield (born January 5, 1895; died March 3, 1981) was a prominent American microbiologist. She joined the Rockefeller Institute for Medical Research in New York in 1918 and was associated to that institute throughout her… … Wikipedia
Streptococcus — Not to be confused with Staphylococcus. Streptococcus Scientific classification Kingdom: Bacteria Phylum … Wikipedia
Streptococcus — A group of bacteria, familiarly known as strep, that can (and do) cause a multitude of diseases. The name comes from the Greek strepto meaning twisted + kokkos meaning berry, and that is exactly what Strep look like under the microscope, like a… … Medical dictionary
streptococcus — streptococcal /strep teuh kok euhl/, streptococcic /strep teuh kok sik/, adj. /strep teuh kok euhs/, n., pl. streptococci / kok suy, see/. Bacteriol. any of several spherical or oval bacteria of the genus Streptococcus, occurring in pairs or… … Universalium
C carbohydrate — one of a group of polysaccharides found in cell walls of β hemolytic streptococci and used for identification in the Lancefield classification (see under classification) … Medical dictionary
