ABSTRACT
A direct extraction of the antigen of group A beta-hemolytic streptococci from 373 throat swabs was done with a microtechnique of the nitrous acid extraction-Phadebact coagglutination method. The technique yielded a 96% agreement with the results obtained by a standard throat culture method in which the Phadebact grouping procedure with overnight broth supernatants was employed.
| Antimicrob. Agents Chemother. | Clin. Microbiol. Rev. |
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| Clin. Vaccine Immunol. | ALL ASM JOURNALS |
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