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. 2022 Jul 29;14(8):1578. doi: 10.3390/pharmaceutics14081578

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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In situ bioprinting techniques: (A) In situ crosslinking technique consisting of exposing the bio-ink to visible light just after being extruded. Adapted from [66]. (B) “Biopen”—extrusion-based handled bioprinting technique based on a coaxial system. Adapted from [67].