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.
A family of MHC class I-like molecules expressed on the surface of immature thymocytes, Langerhans cells, and certain B cells; CD1 is a ligand for T cell subpopulation, is present in intestinal epithelium adjacent to GALT, possibly involved in epithelial immunity.See Gut-associated lymphoid tissue. family of MHC class I-like molecules expressed on the surface of immature thymocytes, Langerhans cells, and certain B cells; CD1 is a ligand for T cell subpopulation, is present in intestinal epithelium adjacent to GALT, possibly involved in epithelial immunity.