A method is described for performing type-specific anti-M precipitin tests on group A hemolytic streptococci in 1 mm. capillary pipettes. These tests require so much less precipitating serum than was formerly used that the method now seems to be practical.
TYPING GROUP A HEMOLYTIC STREPTOCOCCI BY M PRECIPITIN REACTIONS IN CAPILLARY PIPETTES
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Homer F. Swift, Armine T. Wilson, Rebecca C. Lancefield; TYPING GROUP A HEMOLYTIC STREPTOCOCCI BY M PRECIPITIN REACTIONS IN CAPILLARY PIPETTES . J Exp Med 1 August 1943; 78 (2): 127–133. doi: https://doi.org/10.1084/jem.78.2.127
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