IMMUNOLOGY

MISCELLENOUS

VACCINATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The precursor cells of erythrocytes (red blood cells) are called:
A
Mast cells
B
Reticulocytes
C
NK cells
D
Leukocytes
Explanation: 

Detailed explanation-1: -Reticulocytes are non-nucleated, immature RBCs formed in the blood marrow before being released in the blood. The reticulocyte count is used to estimate the degree of effective erythropoiesis and can help in the diagnosis of different types of anemia.

Detailed explanation-2: -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.

Detailed explanation-3: -Erythrocytes develop from reticulocytes, which are defined (in mammals) as erythroid cells that have lost their nucleus but still retain residual RNA. Reticulocytes in turn are generated in the bone marrow from mature erythroblasts by enucleation.

Detailed explanation-4: -Reticulocytes are slightly immature red blood cells. A reticulocyte count is a blood test that measures the amount of these cells in the blood. In the presence of some anemias, the body increases production of red blood cells (RBCs), and sends these cells into the bloodstream before they are mature.

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