Rebecca Lancefield was an american microbiologist, born 1895 a | Wesalosis " medical "

Rebecca Lancefield was an american microbiologist, born 1895 and died 1981, she had an outstanding career with over 50 publications in the field of microbiology, one of which was classification of beta hemolytic streptococci into groups according to carbohydrate antigen at the cell wall known as "Lancefield groups" and the distinction that Group A was responsible for rheumatic fever.