Sections of living tissue with a simple configuration and operation I split into fragments of size, including a sufficient amount of cells. A substrate having a plurality of small pieces (20a) can be pasted surface sections of the dividable provided is biological tissue (A) to, and affixed to a surface by dividing the substrate into a plurality of small pieces (20a) provide sections (A) and the small piece (20a) the organization split device comprising dividing unit that divides into fragments of substantially the same shape and the (22, 23).
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