An immature red blood cell, having a reticular network of RNA
An anucleate hemoglobin-containing cell, especially as found in humans but more generally present in the blood of most vertebrates, that is involved with the transport of oxygen; a red blood cell.
an immature red blood cell containing a network of filaments or granules
a mature blood cell that contains hemoglobin to carry oxygen to the bodily tissues; a biconcave disc that has no nucleus
Reticulocytes are immature red blood cells (RBCs). In the process of erythropoiesis (red blood cell formation), reticulocytes develop and mature in the bone marrow and then circulate for about a day in the blood stream before developing into mature red blood cells.