Histology, Reticulocytes

In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2024 Jan.


Reticulocytes are immature red blood cells (RBCs) produced in the bone marrow and released into the peripheral blood, where they mature into RBCs within 1 to 2 days. An increase or decrease in reticulocyte count can be an indicator of erythropoiesis activity or failure, especially relative to anemias and bone marrow dysfunction.

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