The role of Lancefield groups of beta-hemolytic streptococci in respiratory infections.
D006801:Humans; D012137:Respiratory System; D012140:Respiratory Tract Diseases; D012141:Respiratory Tract Infections; D013290:Streptococcal Infections; D013291:Streptococcus
RESPIRATORY TRACT/diseases; STREPTOCOCCI/hemolytic