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→Foetal Haematopoeisis
==Foetal Haematopoeisis==
==Foetal Haematopoiesis==
====Yolk Sac Phase====
====Yolk Sac Phase====
<p>Blood islands from the mesoderm form in the yolk sac early in gestation. They provide primitive erythrocytes to support the developing embryo. These blood islands also give rise to the haematopoietic stem cells.</p>
<p>Blood islands from the mesoderm form in the yolk sac early in gestation. They provide primitive erythrocytes to support the developing embryo. These blood islands also give rise to the haematopoietic stem cells.</p>