title: Deficiency of pneumococcal serum opsonizing activity in sickle-cell disease.
mesh_terms: D000328:Adult; D000372:Agglutination Tests; D000755:Anemia, Sickle Cell / Q000097:blood* / Q000276:immunology / Q000473:pathology; D044383:Black People; D002648:Child; D002675:Child, Preschool; D003165:Complement System Proteins / Q000032:analysis; D005260:Female; D006400:Hematocrit; D006358:Hot Temperature; D006801:Humans; D066298:In Vitro Techniques; D007223:Infant; D008297:Male; D009895:Opsonin Proteins; D010587:Phagocytosis; D012475:Salmonella; D013154:Spleen / Q000473:pathology; D013296:Streptococcus pneumoniae / Q000276:immunology*
chemical_list: D009895:Opsonin Proteins; D003165:Complement System Proteins