High-resolution scientific illustration of mouse brain interfaces in a clean journal figure style. Diagonal composition with three regions: choroid plexus, ventricular space, and brain tissue. Choroid plexus shown as a structured epithelial sheet made of cuboidal cells with a soft golden highlight indicating activity. Beneath it is an organized vascular core with simple vessel structures. A few small non-luminous supporting immune-like cells are present on the surface. Central ventricular space shown as a clear fluid gap separating regions. Brain tissue in lower right shown as softly textured neural environment with simplified neurons and supporting glial cells, embedded in a vascular network. Blood vessel network includes a few highlighted endothelial tip cells with subtle glow matching the choroid plexus. Light abstract flow lines indicate communication between regions. Minimal, clean, professional scientific figure style. White background. Clear separation of anatomical regions. No dramatic effects, no horror, no realism exaggeration, no clutter.