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. 2016 Mar 23;6:23591. doi: 10.1038/srep23591

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(a,b) Photograph of as-fabricated microwell arrays in a honeycomb lattice. The diameter, depth and center-to-center spacing of microwell is 20, 27, and 40 μm, respectively. (c,d) Optical images of microwells in a honeycomb or square lattice with single cell entrapment. The scale bar in all the figures is 20 μm.