Which of the following factors influences the rate of hemoglobin synthesis in erythroid precursor cells?

A Erythropoietin
B Iron availability
C Heme regulation
D All of the above ✓

Explanation

Erythropoietin, iron availability, and heme regulation all play important roles in influencing the rate of hemoglobin synthesis in erythroid precursor cells.

Source

Guyton and Hall Textbook of Medical Physiology
Hematology Hematology: Hemoglobin and Oxygen Transport Hematology: Hemoglobin and Oxygen Transport Hard MEDICAL Confidence: high