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. 2021 May 26;9:624553. doi: 10.3389/fbioe.2021.624553

FIGURE 1.

FIGURE 1

Chip microfabrication and cell seeding. (A) Top and (B) side views of the sequential steps for microfabrication and cell seeding: (1) Collagen was poured on top of the tungsten wires placed in a micromold and maintained by PCR tape. (2) Wires were removed. At this stage an additional coating could be applied. (3) Cells were seeded in tubes, and (4) colonized it in a few days.