During postembryonal haemopoiesis in red bone marrow the cells of one of the cellular differons demonstrate gradual decrease in cytoplasmic basophilia as well as increase in oxyphilia, the nucleus is being forced out. Such morphological changes are typical for the following haemopoiesis type:

Answer options

1. Erythropoiesis
2. Basophil cytopoiesis
3. Neutrophil cytopoiesis
4. Lymphopoiesis
5. Eosinophil cytopoiesis

Explanation

Erythropoiesis is the formation of red blood cells. The reticulocytes (young red blood cells) do contain a nucleus but after they mature the nucleus is forced out and they gain more affinity for oxygen(oxyphilia).