Resumen: Many different strategies can be found in the literature to model organ physiology, tissue functionality, and disease in vitro; however, most of these models lack the physiological fluid dynamics present in vivo. Here, we highlight the importance of fluid flow for tissue homeostasis, specifically in vessels, other lumen structures, and interstitium, to point out the need of perfusion in current 3D in vitro models. Importantly, the advantages and limitations of the different current experimental fluid-flow setups are discussed. Finally, we shed light on current challenges and future focus of fluid flow models applied to the newest bioengineering state-of-the-art platforms, such as organoids and organ-on-a-chip, as the most sophisticated and physiological preclinical platforms. Idioma: Inglés DOI: 10.1063/5.0146000 Año: 2023 Publicado en: APL Bioengineering 7, 3 (2023), 031501 [24 pp.] ISSN: 2473-2877 Factor impacto JCR: 6.6 (2023) Categ. JCR: ENGINEERING, BIOMEDICAL rank: 18 / 122 = 0.148 (2023) - Q1 - T1 Factor impacto CITESCORE: 9.3 - Biophysics (Q1) - Biomaterials (Q1) - Biomedical Engineering (Q1) - Bioengineering (Q1)