<unk>  most often refers to hereditary<unk> . This is caused by a molecular defect in one or more of the proteins of the red blood cell cytoskeleton, including spectrin, ankyrin, Band 3, or Protein 4.2. Because the cell skeleton has a defect, the blood cell contracts to a<unk> ere, which is its most surface tension efficient and least flexible configuration. Though the<unk> erocytes have a smaller surface area through which oxygen and carbon dioxide can be exchanged, they in themselves perform adequately to maintain healthy oxygen supplies. However, they have a high osmotic fragility—when placed into water, they are more likely to burst than normal red blood cells. These cells are more prone to physical degradation. In short,<unk>  has an attribute of decreased cell deformability.
Spherocytosis
Macrocytosis
Neuroacanthocytosis
Anisocytosis
Pyknocytosis
Anisopoikilocytosis
Poikilocytosis
Plasmacytosis