monoclonal antibody, light chain and heavy chain variable regions, isolated cdr, polynucleotide, therapeutic composition, methods for treating disease and disorder, for producing an antibody, for treating or alleviating the effects of disease and disorder, for reducing plaque burden in an individual's brain, to reduce the amount of plaque in an individual's brain, to decrease the total amount of soluble spruce in an individual's brain, to retain or increase an individual's cognitive memory capacity, to diagnose from or to diagnose a predisposition to an amyloid-associated disease or condition in a patient, to determine the extent of amyloidogenic plaque burden in an individual's tissue, to monitor minimal residual disease in an individual, and to predict an individual's responsiveness, cell line , test kit, epitope fir