Fig. 2
From: 3D printed scaffolds based on hyaluronic acid bioinks for tissue engineering: a review
3D bioprinting methods. A Droplet-based bioprinting [123]. Copyright 2016, Elsevier Ltd. All rights reserved. License Number: 5618191482149. B Extrusion bioprinting [126]. Copyright 2021, the Authors. Licensee MDPI, Basel, Switzerland. Based on Creative Commons Attribution License (CC BY). C Laser-assisted bioprinting [127]. Copyright 2022, the Authors. Published by Frontiers. Based on Creative Commons Attribution License (CC BY). D Stereolithography (SLA) and digital light processing (DLP) [127]. Copyright 2022, the Authors. Published by Frontiers. Based on Creative Commons Attribution License (CC BY). E In situ bioprinting [128]. Copyright 2019, Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. License Number: 13911336–1. F Freeform 3D printing [129]. Copyright 2022, the Authors. Published by American Chemical Society. Based on Creative Commons Attribution License (CC BY). G. Suspension printing [130]. Copyright 2021, Wiley–VCH GmbH. License Number: 5618230459998