Figure 1

Schematic figure indicating composition process of Spiral Array. A) 100 μm-thick sections are cut from the donor blocks. B) The sections are then reeled on the plastic core. C) The subcylindrical cores were cut in the center of the reel. D) Each subcylindrical reel was vertically inserted into a tissue-holding-cassette. E) By pouring a melted paraffin, Spiral Array block is completed.