Lancefield's streptococcal classification
Lancefield's streptococcal classificationA division of STREPTOCOCCI (see STREPTOCOCCUS) into four groups on the basis of the antigenic differences in the polysaccharide structure of the cell walls of the organisms. Group A, Streptococcus pyogenes , are the most dangerous. (Rebecca Craighill Lancefield, 1895–1981, American bacteriologist).
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005