| Summary: | Summary: Tumor-derived organoids are valuable for testing anti-cancer drugs in vitro, but existing lysis-based protocols for viability measurement are laborious and restricted at a single time point. Here, we provide a lysis-free protocol for longitudinal and rapid assessment of mouse gastric tumor organoid viability and growth. We describe organoid plating, viability assessment via luminescence measurement, quantification of organoid growth by microscopy imaging, and treatment of organoids with test compounds to evaluate the effects on viability and growth at various time points. : Publisher’s note: Undertaking any experimental protocol requires adherence to local institutional guidelines for laboratory safety and ethics.
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