%0 Journal Article %K FCS-free medium %K Wnt signaling %K expansion medium %K organoids %K Regenerative Medicine %K the 3Rs %B Frontiers in Toxicology %D 2025 %G English %R 10.3389/ftox.2025.1504469 %T Optimizing Wnt activation in fetal calf serum (FCS)-free organoid expansion media %U https://www.frontiersin.org/journals/toxicology/articles/10.3389/ftox.2025.1504469/full %V 7 %8 2025-05-14