Use my special link https://zen.ai/thedictionary to save 30% off your first month of any Zencastr paid plan.   

I read from erythrism to escadrille.

Erythropoiesis is the process of making red blood cells and until you're about 5 years old, "The bone marrow of essentially all the bones produces red blood cells."

https://en.wikipedia.org/wiki/Erythropoiesis

WARNING: This link about "erythroblastosis fetalis ...