Hemoglobin S, the pneumococcus, and the spleen.
D000367:Age Factors; D000755:Anemia, Sickle Cell / Q000150:complications* / Q000503:physiopathology; D002648:Child; D002675:Child, Preschool; D006801:Humans; D008586:Meningitis, Pneumococcal / Q000150:complications; D010406:Penicillins / Q000627:therapeutic use; D011008:Pneumococcal Infections / Q000150:complications* / Q000517:prevention & control; D013154:Spleen / Q000503:physiopathology*
D010406:Penicillins