Development of the immune system
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Anne Durandy
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Article
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1997
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Hindawi Publishing Corporation
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English
β 215 KB
π 3 views
T he development of immune defense mecha- nisms begins early during fetal life but is not completely achieved at birth, leading to a peculiar susceptibility of the neonate to infectious diseases. 1,2 The earliest hematopoietic stem cells are detectable in the yolk sac around 6 weeks of gestation, bu