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Bioprinting 101 Part 5 – Bioink

Bioprinting 101 Part 5 – Bioink

Written by David

February 14, 2019

Bioink refers to substances made of living cells that can be used for 3D printing of complex tissue models. Bioinks are materials that mimic an extracellular matrix environment to support the adhesion, proliferation, and differentiation of living cells. Bioinks distinguish themselves from traditional biomaterials such as hydrogels, polymer networks, and foam scaffolds due to their ability to be deposited as filaments during an additive manufacturing process. They can be alginate-based, gelatin based, pluronics, and decellularized ECM-based. Alginate is a naturally derived biopolymer from the cell wall of brown algae that has been widely used as a biomaterial. Alginates are particularly suitable for bioprinting due to their mild cross-linking conditions via incorporation of divalent ions such as calcium. These materials have been adopted as bioinks through increasing their viscosity. Additionally, these alginate-based bioinks can be blended with other materials such as nanocellulose for application in tissues such […]

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