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Bone marrow is referred to as [[#Red marrow|red]] or [[#Yellow marrow|yellow]]. Red bone marrow is involved with [[Haemostasis - WikiBlood|haemostasis]] while yellow bone marrow is adipose tissue. Bone marrow occupies the cavities in [[Bones and Cartilage - Anatomy & Physiology#Types of Bone|long bones]] and spaces in [[Bones and Cartilage - Anatomy & Physiology#Types of Bone|spongy bones]].
 
Bone marrow is referred to as [[#Red marrow|red]] or [[#Yellow marrow|yellow]]. Red bone marrow is involved with [[Haemostasis - WikiBlood|haemostasis]] while yellow bone marrow is adipose tissue. Bone marrow occupies the cavities in [[Bones and Cartilage - Anatomy & Physiology#Types of Bone|long bones]] and spaces in [[Bones and Cartilage - Anatomy & Physiology#Types of Bone|spongy bones]].
 
==Development==
 
==Development==
<p>Pluripotential haematopoietic stem cells (PPSC) migrate into bones from the [[Overview of Haematopoiesis - WikiBlood#[edit] Yolk Sac Phase|embryonic yolk sac]] and the [[Overview of Haematopoiesis - WikiBlood|foetal liver]] during development, a process called homing. The cells then associate closely with the connective tissues within the bone. The PPSCs continue to constantly divide in the bone marrow with one daughter cell remaining a pluripotential stem cell and the other daughter cells develops into a multipotential haematopoietic stem cells. The multipotential stem cells also constantly divide with some daughter cells remaining stem cells and the other daughter cells developing into blood cells ([[Overview of Haematopoiesis - WikiBlood|Haematopoiesis]]).</p>
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<p>Pluripotential haematopoietic stem cells (PPSC) migrate into bones from the [[Overview of Haematopoiesis - WikiBlood#Yolk Sac Phase|embryonic yolk sac]] and the [[Overview of Haematopoiesis - WikiBlood|foetal liver]] during development, a process called homing. The cells then associate closely with the connective tissues within the bone. The PPSCs continue to constantly divide in the bone marrow with one daughter cell remaining a pluripotential stem cell and the other daughter cells develops into a multipotential haematopoietic stem cells. The multipotential stem cells also constantly divide with some daughter cells remaining stem cells and the other daughter cells developing into blood cells ([[Overview of Haematopoiesis - WikiBlood|Haematopoiesis]]).</p>
    
==Red marrow==
 
==Red marrow==
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