Studies on Acute Respiratory Infections

[摘要] Differences in the hemolytic activity of streptococci when grown on blood agar were noted by Schottmuller (1) in 1903. The blood-agar plate was generally employed to determine the hemolytic ability of streptococci until Lyall (2) (1914) advised the use of the tube method as a means of differentiation. Later Smith and Brown (3), using the blood agar plate method, introduced a new nomenclature to indicate the reactions obtained. Brown (4) elaborated these findings and gave detailed descriptions of the characteristics to be observed and advocated a classification based upon such observations. He gave a very complete review of the whole subject.The superiority of either the plate method or the tube method depends upon the answers to the following questions: (a) Does the plate method bring out all the differential characteristics not shown by the latter method, or is the reverse true? (b) Does each method bring out certain characteristics?

[学科分类] 生物科学（综合）