CELL ADHESION, SIGNAL REGULATORY PROTEIN ALPHA, IMMUNOGLOBULIN SUPERFAMILY, PHOSPHOPROTEIN, DISULFIDE BOND, PAIRED RECEPTOR, ALTERNATIVE SPLICING, IMMUNOGLOBULIN DOMAIN, SIRP, CD47, SIRPA, MEMBRANE, SH3-BINDING, POLYMORPHISM, GLYCOPROTEIN, TRANSMEMBRANE COMPLETE EXTRACELLULAR STRUCTURE OF HUMAN SIGNAL REGULATORY PROTEIN (SIRP) ALPHA 2WNG