The shape of RBC is biconcave due to
The remarkable deformability and durability of the normal red cell are attributable to the physicochemical propeies of its specialized membrane skeleton, which lies closely apposed to the internal surface of the plasma membrane. Its chief protein component is spectrin.Hereditary spherocytosis is caused by diverse mutations that lead to an insufficiency of membrane skeletal componentsRobbins 9e pg: 632
Ferrous state of Iron
Spectrin
Band protein
Glycophorin C
Haematology