The delicate interlacing threads, formed by aggregations of neurofilaments and neurotubules, coursing through the cytoplasm of the body of a neuron and extending from one dendrite into another or into the axon.
Abnormal structures located in various parts of the brain and composed of dense arrays of paired helical filaments (neurofilaments and microtubules). These double helical stacks of transverse subunits are twisted into left-handed ribbon-like filaments that likely incorporate the following proteins