The present invention relates to a method for the detection of marker of the Alzheimer's disease, namely the amy-loid-.beta. oligomers in human CSF, using a combination of steps including demasking the epitopes responsible for antibody binding on the A.beta. peptide oligomers as well as detecting fluorescently marked antibodies binding to said epitopes, preferably by using the FRET technology.
METHOD FOR THE DETECTION OF AMYLOID-~ OLIGOMERS IN BODY FLUIDS