Ganglioside monoclonal antibody (A2B5) labels Alzheimer's neurofibrillary tangles.

Ganglioside monoclonal antibody (A2B5) labels Alzheimer's neurofibrillary tangles both in isolated neurofibrillary tangle-bearing nerve cells and in partially purified preparations of tangle fibers. Antibody staining was preabsorbed by preincubation of antibody with neuronal ganglioside preparations. These results suggest that Alzheimer's neurofibrillary tangles have a ganglioside associated with them.