Vitamin B12 deficiency is primarily caused by a lack of vitamin B12-rich foods in the diet though other factors can also ...

Megaloblastic anemia, classification of anemia marked by production and peripheral proliferation of large, immature, dysfunctional RBCs; see in severe pernicious anemia or folic acid deficiency ...

Megaloblastic anemia, classification of anemia marked by production and peripheral proliferation of large, immature, dysfunctional RBCs; see in severe pernicious anemia or folic acid deficiency ...