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The identification of mature and immature blood cells in peripheral blood smears and bone marrow preparations is fundamental to the laboratory diagnosis of haematological disorders. Here, you may review the mature and immature white cells to gain more practice and confidence in their identification.
When red blood cells cevelop from these stem cells these early red blood cells still have a nucleus which contains the genomic DNA. Later on when the red blood cells mature they lose their nucleus and along with it their genomic DNA.So immature red blood cells have genomic DNA wheras mature red blood cells dont.est Answer: No, red blood cells do not have and do not need a nucleus (except for when they are developing in the bone marrow). This maximises the space available for haemoglobin, and so allows them to transport oxygen more efficiently.