Single function switches are the most commonly used adaptive switches. This type of switch performs one function (i.e., on/off) this switch has only one function - on or off. The switch may only be in one of the states at any one moment in time. Multiple function switches may perform two or more functions.
Echinocytes and keratocytes should be considered in the differential diagnosis of spur cell anemia. Echinocytes or burr cells are spiculated red blood cells with uniform, narrow, spikelike surface projections. Spur cells have fewer spicules, and the spicules vary more in size than echinocytes. Keratocytes are acanthocytelike cells with bizarre shapes and horny projections. Differential Diagnoses.
Burr oak, also spelled bur oak, is a tree with many striking features, including crooked branches, large leaves and big acorns. It is a highly adaptable species of oak tree and a member of the beech family. The burr oak gets its name from the fringed cap that grows on its acorns, which is somewhat spiny.