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. 2014 Dec 17;1(1):19–26. doi: 10.1021/ab500026f

Figure 3.

Figure 3

3D printing of DNA-derivatized microparticles. (A) Digital photograph shows an ABS thermoplastic pyramid printed by the 3D printer to show the desired output pattern. Scale bar is 5 mm throughout. (B) Digital micrograph shows the output of the 3D printer when it attempts to extrude microparticles bearing noncomplementary DNA. (C–E) Digital micrographs show DNA cross-linked colloidal gel printed into the pyramidal shape with extrusion rates of 1.3, 1.7, and 2.1 μL/s, respectively. The 3D printer head motion pattern was identical in all three cases.