(A, B) FTLD-TDP characterized by TDP-43 immunoreactive neuronal cytoplasmic inclusions and neurites in (A) neocortex and (B) hippocampal dentate granule cell layer. (C) TDP-34 immunoreactive neuronal cytoplasmic inclusions in spinal cord lower motor neurons, typical of ALS. (D) Numerous neuronal cytoplasmic inclusions and neurites in cerebellar granular layer immunoreactive for ubiquitin but not TDP-43. Scale bar: (A) 15 μm, (B) 30 μm, (C) 100 μm, (D) 12 μm.