Changes

==Red marrow==

==Red marrow==

<p>Red bone marrow consists of [[Blood Vessels|blood vessels]], sinusoids and a network of haematopoietic cells. Sinusoids are vascular components with an endothelial layer, basal lamina and an outer adventitial cell layer. The adventitia cells are also called reticular cells and these extend into the haematopoietic cells in sheets to provide structural support. They also produce reticular fibres and [[Cytokines - WikiBlood|cytokines]] to help stimulate blood cell production. Histological sections show that the haematopoietic cells lie in cords. The cells in these cords form many different blood cell types but cells producing one cell type tend to be located in groups along the cords.</p>

<p>Red bone marrow consists of [[Blood Vessels|blood vessels]], sinusoids and a network of haematopoietic cells. Sinusoids are vascular components with an endothelial layer, basal lamina and an outer adventitial cell layer. The adventitia cells are also called reticular cells and these extend into the haematopoietic cells in sheets to provide structural support. They also produce reticular fibres and [[Cytokines|cytokines]] to help stimulate blood cell production. Histological sections show that the haematopoietic cells lie in cords. The cells in these cords form many different blood cell types but cells producing one cell type tend to be located in groups along the cords.</p>

==Yellow marrow==

==Yellow marrow==