IMMUNE SYSTEM, IMMUNOGLOBULIN C REGION, CHROMOSOMAL REARRANGEMENT, ANTIBODY ENGINEERING, IMMUNOGLOBULIN DOMAIN, SECRETED, ANTIBODY, KIFUNENSINE, GLYCOPROTEIN, OLIGOMANNOSE, GLYCOSYLATION CRYSTAL STRUCTURE OF AN IGG1 FC GLYCOFORM (MAN9GLCNAC2) 2WAH