What is the most nucleated body in earth

answer:

red blood cell. if i got this right will you mark me as brainliest.

answer:

all vertebrate organisms have hemoglobin-containing cells in their blood, and with the exception of mammals, all of these red blood cells contain a nucleus.[1] mammals represent ~5,500 named species out of ~66,000 vertebrate species,[2] and within this ~8% subgroup, red blood cells are known as erythrocytes or rbcs and have no cell nucleus in mature organisms. in contrast, a nucleated red blood cell (nrbc), also known by several other names, is a mammalian rbc that contains a cell nucleus. nrbcs occur in normal development as progenitor cells in the erythropoietic lineage and in pathological states.

normally, nucleated rbcs are found only in the circulation of fetuses and newborn infants.[3] after infancy, rbcs normally only contain a nucleus during the very early stages of the cell's life, and the nucleus is ejected as a normal part of cellular differentiation before the cell is released into the bloodstream. thus, if nrbcs are seen on an adult's peripheral blood smear, it suggests that there is a very high demand for the bone marrow to produce rbcs, and immature rbcs are being released into circulation. possible pathologic causes include anemia, myelofibrosis, thalassemia, miliary tuberculosis, cancers involving bone marrow (myelomas, leukemias, lymphomas), and in chronic hypoxemia.[4]

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