An anucleated cell contain no nucleus and is , therefore , incapable of dividing to produce daughter cells . The best @-@ known anucleated cell is the mammalian red blood cell , or erythrocyte , which also lack other organelles such as mitochondria , and serve primarily as a transport vessel to ferry oxygen from the lungs to the body 's tissues . Erythrocytes mature through erythropoiesis in the bone marrow , where they lose their nuclei , organelles , and ribosomes . The nucleus is expelled during the process of differentiation from an erythroblast to a reticulocyte , which is the immediate precursor of the mature erythrocyte . The presence of mutagens may induce the release of some immature " micronucleated " erythrocytes into the bloodstream . Anucleated cells can also arise from flawed cell division in which one daughter lack a nucleus and the other have two nuclei .