We used FISH to validate the neuritic localization of a few transcripts, including ATXN2 (an ALS-associated gene (43)), the small ribosomal subunit protein RPS27A, and UBQLN1 (a protein degradation chaperone involved in multiple neurodegenerative diseases (44,45)). Here, ATXN2 is linked to amyotrophic lateral sclerosis.