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A nucleated red blood cell, or NRBC, is a red blood cell (RBC) that retains nucleus. Normally, NRBCs are only found in the circulation of fetuses and newborn infants. nucleated red blood cell, or NRBC, is a red blood cell (RBC) that retains nucleus. Normally, NRBCs are only found in the circulation of fetuses and newborn infants.
A red blood cell, or erythrocyte, is the most common type of cell in blood. It carries oxygen throughout the circulatory system, from the lungs to the rest of the body, and brings carbon dioxide waste back the other way. Chicada-Your bone marrow produces your red blood cells. In some cases bone marrow will produce too many red blood cells, other times red blood cell count may be high because of overproduction of proteins in the liver. Poor lung and heart function can also be a reason for the increase in your red blood cell count.