RNA in situ hybridization of variant Il4i1_2 in different areas of adult mouse brain. Shown are sagittal sections from cerebellum (1), cortex (2), hippocampus (3) and olfactory bulb (4). Probes were transcribed from the joining exons specific for variant Il4i1_2, located between the previously known Nup62 and Il4i1 gene loci. Signals (in blue) obtained with the antisense probe are on the left (A), and those obtained with the sense probe are on the right (B). The scale bar is 500 μm in 2A and 3A, and 200 μm in the other images.