My red blood cell was made in the bone marrow of the femur

Where was Wille made?

Hemocytoblasts and RBC precursors nuclei make a cell called normoblast. Normoblast cells make hemoglobin, which makes the cell a little red. Next, the normoblast ejects the nucleus, but doesn't stop producing hemoglobin, because directions from the nucleus are "programmed" into the cell. When enough hemoglobin is made, the cell is released from the bone marrow, into the bloodstream