title: Antistreptolysin titres in schoolchildren in Khartoum.
mesh_terms: D000989:Antistreptolysin / Q000097:blood*; D001431:Bacteriological Techniques; D002648:Child; D005260:Female; D006306:Health Surveys; D006801:Humans; D008297:Male; D013290:Streptococcal Infections / Q000453:epidemiology*; D013291:Streptococcus / Q000302:isolation & purification; D013397:Sudan
chemical_list: D000989:Antistreptolysin