STUDIES IN THE RELATION OF THE HEMOLYTIC STREPTOCOCCUS TO RHEUMATIC FEVER : II. FRACTIONATION OF THE HEMOLYTIC STREPTOCOCCUS BY HIGH SPEED CENTRIFUGATION.

STUDIES IN THE RELATION OF THE HEMOLYTIC STREPTOCOCCUS TO RHEUMATIC FEVER : II. FRACTIONATION OF THE HEMOLYTIC STREPTOCOCCUS BY HIGH SPEED CENTRIFUGATION.