This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Physiology
Hemoglobin first appears in 
Select and explain. 
A. Early normoblasts, B. Intermediate normoblasts, C. Late normoblasts, D. Reticulocytes
A: Early normoblasts
Answer: A: Early normoblasts 
Explanation: Hb synthesis sta in the stage of intermediate normoblast and then its content increase rapidlyRef: Medical Physiology Indu Khurana 2015 edition page No:106