Researchers have developed an innovative three-dimensional model to study the regeneration of nerve tissue in the nasal cavity, and in doing so have uncovered a potentially significant new understanding of how the sense of smell is maintained. Using this novel model, scientists discovered that a type of stem cell previously believed to be dormant may be far more active in preserving olfactory function than previously thought. The findings, reported by ScienceDaily on June 3, 2025, suggest that these stem cells could play a critical role in the ongoing repair and regeneration of olfactory nerve tissue. The development of a 3D model to study nasal nerve tissue regeneration represents a methodological advancement in olfactory research, allowing scientists to observe cellular behavior in an environment that more closely mimics biological conditions than traditional flat, two-dimensional models. The implications of this research could be significant for understanding and potentially treating smell disorders, including those associated with viral infections such as COVID-19, which has been linked to widespread olfactory dysfunction. Researchers caution that while the findings are promising, further studies will be needed to confirm the role of these stem cells and to determine whether they can be therapeutically targeted. The study's design, sample size, and potential conflicts of interest were not specified in the available summary, and the full peer-reviewed publication has not yet been independently verified by VITALIS. Source: https://www.sciencedaily.com/releases/2025/06/250603172911.htm