Hemoglobin appears in which stage of Erythropoiesis?

Concept

Erythropoiesis is the process that produces red blood cells.

Stages of erythropoiesis are

• Basophilic normoblast (early normoblast)
• Polychromatic normoblast (intermediate normoblast)
• Orthochromatic normoblast (late normoblast)

Explanation- 

Intermediate normoblast

• It is also known as Polychromatic normoblast.
• It is the last precursor cell capable of mitosis and is smaller than the basophilic erythroblast.
• The cytoplasm appears greyer due to the presence of haemoglobin.
• In this stage, Cell is smaller.
• The nucleus is present in this stage.
• Haemoglobin appears in this stage

Additional Information 

  Late Normoblast stage

• It is also known as Orthochromatic erythroblast.
• It is incapable of cell division.
• Slightly larger than a mature erythrocyte.
• It contains a small dense nucleus

Early Normoblast stage

• It is also known as the Basophilic erythroblast.
• It is smaller than the proerythroblast.
• It is having a smaller nucleus and more basophilic cytoplasm.
• It is involved in the production of haemoglobin.

Reticulocyte stage

• It is also known as Polychromatophilic erythrocyte.
• It is formed when the nucleus is extruded from the normoblast.
• It contains some ribosomes and therefore retains a slight basophilic stain.
• Cells can carry oxygen and enter the bloodstream and are found in low concentrations in normal blood