Figure 2.

Block maps provide the identity of brains in experiments containing multiple blocks. (A,B) Frosted-end microscope slides and the 3D-printed form provide spaces for up to six mouse brains or four rat brains. In experiments requiring multiple blocks, a space may be left unoccupied, or one brain may be turned off-axis to provide identity for that block. (C) The block map for a 24-brain experiment is provided. Sections from all four blocks were stained simultaneously in the same dish since the sections were distinguishable from the map.