Fig. 2: Microfabrication techniques for tumor-on-a-chip.
From: Tumor-on-a-chip: from bioinspired design to biomedical application

a, b Use of photolithography and soft lithography to fabricate a simple PDMS microfluidic culture device, conformally sealing it to a flat glass substrate. Adapted with permission136. Copyright 2013, RSC. c Use of microcontact printing to generate a protein pattern for cell culture. Adapted with permission144. Copyright 2000, Wiley.