Changes

===About Red Blood Cells===

: '''Red blood cells''' carry [[oxygen]] in their [[haemoglobin]] [[molecule]]s.

: '''Red blood cells''' are made in the [[Bone Marrow|bone marrow]].

: When '''red blood cells''' die they are broken into small pieces called [[platelets]] which help the [[blood]] clot when there is an open wound.

: If a person suffers from [[Sickle Cell Anemia]] the '''red blood cells''' are sickle shaped so they can become stuck in [[capillaries]].