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. 2024 Nov 20;10:107. doi: 10.1038/s41526-024-00444-x

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© The Author(s) 2024

Open Access This article is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License, which permits any non-commercial use, sharing, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if you modified the licensed material. You do not have permission under this licence to share adapted material derived from this article or parts of it. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by-nc-nd/4.0/.

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Fig. 4 — This figure presents the results of a 4-day experiment investigating the survival and metabolic activity of stem cells grown in SLA-printed scaffolds (blue arrows). a Metabolic activity was measured using an XTT assay at day 1 (mean = 1.4, SD = 0.23) and at day 4 (mean = 1.5, SD = 0.19), showing a slight increase over time despite high standard deviations due to a small sample size (n = 4 per group). Analysis showed no significance between groups and days. Concurrently, (c–f) Live/Dead staining and imaging highlighted a predominance of viable (green) cells over dead ones (red), reinforcing the potential for successful cell growth within these scaffolds.