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. Author manuscript; available in PMC: 2014 May 27.
Published in final edited form as: Nat Protoc. 2012 Jun 7;7(7):1247–1259. doi: 10.1038/nprot.2012.051

Figure 1.

Figure 1

(a) Schematic and (b) photograph of the microfluidic cell culture assay incorporating hydrogel and colored liquids in the side channels (red) and central channel (blue). All scales are microns.