a hypothesis is put forward to the effect that there exist in birds two alternative pathways of erythropoiesis : the main pathway which ensures the slow repopulation of blood by erythrocytes under normal conditions and the reserve pathway which opens for a short time under anemia and ensures rapid increase of the erythrocyte titer in blood up to its normal value .
C0014819
erythropoiesis
C0014792
erythrocyte