Abstract
Summary
Two hundred and seventy-five antistreptolysin determinations were made in apparently normal persons from the general population of Puerto Rico. The mean value of 136 apparently normal persons from which hemolytic streptococci could not be cultured at the time the determination was made was 84.1 units. In 43 apparently normal subjects harboring hemolytic streptococci at the time the determination was made, the mean antistreptolysin value was 144.9 units. In 96 normal persons, not harboring demonstrable hemolytic streptococci at the time the determination was made, but having a definite past history of streptococcus infection, the mean value was 154.5 units. The mean value for the 3 groups was 127.& units.
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