The cellular transfer in humans of delayed cutaneous reactivity to hemolytic streptococci.

Summary null 1.In a series of 472 adult patients without apparent streptococcal disease or its complications, the incidence of positive delayed cutaneous reactions was as follows: null a.To intact Streptococcal cells—39% of 67 patients. null b.To SK-SD—69% of 112 patients. null c.To M Substance—36% of 293 patients. null d.Of the total 472 patients, the overall incidence of positive reactions to the streptococcal materials was 45%. null 2.It has...