| In man and in all mammals, erythrocytes are devoid of a nucleus and have the shape of a biconcave lens. |
| The superior biconcave face of the plate marries perfectly the convexity of condyles of the femoral part. |
| They are small biconcave disks without a nucleus and get their red colour from an iron-containing protein called hemoglobin. |
| Under high power unstained red blood cells appear as pale, homogeneous, biconcave discs with no nucleus. |
| The biconcave shape of the cell allows oxygen exchange at a constant rate over the largest possible area. |
| During thermolysis of blood the erythrocytes transition from biconcave discs to spherocytes. |
