GROUPS A, C, AND G STREPTOCOCCI AND ANTISTREPTOLYSIN O  SERUM LEVEL FROM HEALTHY RURAL SCHOOL-CHILDREN OF RIBEIR AO PR ETO, S.P., BRAZIL.
D000989:Antistreptolysin; D001938:Brazil; D002353:Carrier State; D002648:Child; D006801:Humans; D013290:Streptococcal Infections; D013291:Streptococcus
D000989:Antistreptolysin
ANTISTREPTOLYSIN; BRAZIL; CARRIER STATE; CHILD; STREPTOCOCCAL INFECTIONS; STREPTOCOCCUS